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Tuesday, May 24, 2016

IIT-JEE Advanced 2016 Question Paper Pdf

The internet is flooded with test analysis and solutions but it is very hard to find the original question paper. So, here I am providing you with the question papers.

Click here to get paper 1

Click here to get paper 2


Answer keys coming soon.......................................Stay Tuned..............................

Tuesday, April 26, 2016

Nintendo’s weird U-shaped controller

An answer to all your doubts............
Click here to read the article

This Year's Biggest Discoveries in Science

Science mattered more than ever in 2013. Climate science questions raged after Super Typhoon Haiyan pummeled the Philippines. And scientific expertise figured in disarmament debates in Syria and in Iran's proposed halt to its nuclear activities.
Meanwhile, on the pure research front, investigators made plenty of intriguing discoveries in 2013. With plenty to choose from, and argue over, here's a top five list of some favorites from the year. 
1. Space gets more crowded. "Buy land, they're not making it anymore," Mark Twain famously advised investors. Twain never heard of exoplanets, of course. Caltech researchers suggested this year that at least 100 billion such worlds orbit stars in our Milky Way galaxy. That's a lot of new real estate. (See "Smallest Exoplanets Found—Each Tinier Than Earth.")
Of course, not all of them are places you would want to live. A November analysis from NASA's Keck Observatory team suggested that one in five stars may have Earth-size planets orbiting in their "habitable zones"—zones that could be friendly to surface oceans. A more recent climate analysis of habitable zones said that number may be too high, but that is still plenty of planets.
2. Human embryonic stem cells cloned.
The artist's concept depicts Kepler-62f, a super-Earth-size planet in the habitable zone of a star smaller and cooler than the sun, located about 1,200 light-years from Earth in the constellation Lyra.
ENLARGE 
A scientist removes the nucleus from a human egg using a pipette. This is the first step to making personalized embryonic stem cells. 
After more than a decade of false starts, Oregon Health and Science University researchers announced they had cloned human embryos and collected stem cells from them. They also grew the cells into specialized skin and heart cells, a first step toward using them in transplant medicine.
The key to the team's success turned out to be the addition of caffeine to the cloning process. Now researchers will seek to discover whether these cells or similar "induced" stem cells, made without embryos, will have the most medical use.
3. Voyager reaches edge of the solar wind.
An illustration of the Voyager spacecraft.
ENLARGE 
An illustration of the Voyager spacecraft. 
One of the year's biggest announcements came from news that actually happened in 2012. The aftershocks of a pair of solar storms in September confirmed that NASA's venerable Voyager 1 spacecraft had actually entered interstellar space. (See "Voyager 1 Leaves Solar System, NASA Confirms.")
"It is an incredible event, to send the first human object into interstellar space," study lead author Donald Gurnett, of the University of Iowa in Iowa City, told National Geographic.
NASA had long been hoping to announce that the far-flung spacecraft, launched in 1977, had passed the edges of the solar wind. Voyager 1's twin, Voyager 2, is also expected to soon reach interstellar space.
4. Mars lake looks hospitable to ancient life.
The artist's concept depicts Kepler-62f, a super-Earth-size planet in the habitable zone of a star smaller and cooler than the sun, located about 1,200 light-years from Earth in the constellation Lyra.
ENLARGE 
NASA's Curiosity rover landed in the Martian crater known as Gale Crater, which is approximately the size of Connecticut and Rhode Island combined. 
NASA's Curiosity rover continued to make historic tracks in 2013, finding that a vanished lake on the red planet could have supported life there more than three billion years ago.
The discovery is seen as vindication of NASA's efforts to look for past habitable conditions on Mars. The $2.5 billion rover next heads for Mount Sharp, in the center of Gale Crater, its original destination after landing. (See also: "Did Life on Earth Come From Mars?")
5. Lord of the Rings looking more like a documentary.
A new hominid skull.
ENLARGE 
This skull's features resemble those of both earlier and later humans. 
The human family tree suddenly sprouted some funky-looking shoots after a year of ancient DNA and fossil discoveries.
At the Dmanisi site in the Republic of Georgia, for example, researchers reported that what seemed like a lot of different-looking early human species likely were just one, Homo erectus. They based the claim on the discovery of a 1.8-million-year-old skull blessed with a mixture of more ancient and more recent characteristics. (See "Beautiful Skull Spurs Debate on Human History.")
On the genetic front, what looked like a Neanderthal bone in a Spanish cave turned out to actually possess the genes—the oldest DNA yet sequenced—of a different vanished early human species, the Denisovans.
Meanwhile, Siberia's Denisova cave, where Denisovan fossils were first discovered in 2008, yielded a toe bone that belonged to a Neanderthal woman from perhaps 140,000 years ago. (See "Ancient Incest Uncovered in Neanderthal Genome.")
This finding suggests that archaic humans mated with Homo erectus, as well as with some early modern humans in prehistory. A lot of modern people have a little archaic human in their genes, it turns out.

Friday, April 8, 2016

Dark Matter Particle Could be Size of Human Cell

Dark matter could be made of particles that each weigh almost as much as a human cell and are nearly dense enough to become miniature black holes, new research suggests.
We hear a lot about dark matter, and how physicists are ever on the hunt for it. But how do you look for something you can't even see?
While dark matter is thought to make up five-sixths of all matter in the universe, scientists don't know what this strange stuff is made of. True to its name, dark matter is invisible — it does not emit, reflect or even block light. As a result, dark matter can currently be studied only through its gravitational effects on normal matter. The nature of dark matter is currently one of the greatest mysteries in science.
                              

If dark matter is made of such superheavy particles, astronomers could detect evidence of them in the afterglow of the Big Bang, the authors of a new research study said.
Previous dark matter research has mostly ruled out all known ordinary materials as candidates for what makes up this mysterious stuff. Gravitational effects attributed to dark matter include the orbital motions of galaxies: The combined mass of the visible matter in a galaxy, such as stars and gas clouds, cannot account for a galaxy's motion, so an additional, invisible mass must be present. The consensus so far among scientists is that this missing mass is made up of a new species of particles that interact only very weakly with ordinary matter. These new particles would exist outside the Standard Model of particle physics, which is the best current description of the subatomic world.
Some dark matter models suggest that this cosmic substance is made of weakly interacting massive particles, or WIMPs, that are thought to be about 100 times the mass of a proton, said study co-author McCullen Sandora, a cosmologist at the University of Southern Denmark. However, despite many searches, researchers have not conclusively detected any WIMPs so far, leaving open the possibility that dark matter particles could be made of something significantly different.

Now Sandora and his colleagues are exploring the upper mass limit of dark matter — that is, they're trying to discover just how massive these individual particles could possibly be, based on what scientists know about them. In this new model, known as Planckian interacting dark matter, each of the weakly interacting particles weighs about 1019 or 10 billion billion times more than a proton, or "about as heavy as a particle can be before it becomes a miniature black hole," Sandora told Space.com.
A particle that is 1019 the mass of a proton weighs about 1 microgram. In comparison, research suggests that a typical human cell weighs about 3.5 micrograms.
The genesis of the idea for these supermassive particles "began with a feeling of despondency that the ongoing efforts to produce or detect WIMPs don't seem to be yielding any promising clues," Sandora said. "We can't rule out the WIMP scenario yet, but with each passing year, it's getting more and more suspect that we haven't been able to achieve this yet. In fact, so far there have been no definitive hints that there is any new physics beyond the Standard Model at any accessible energy scales, so we were driven to think of the ultimate limit to this scenario."


Wednesday, March 9, 2016

How to Study Maths: 7 Tips for Solving Maths Problems

How to Study Maths

How to study MathsMathematics is a subject that every student has to study at one time or another. Some love it but if we’re being honest, most people hate studying maths. The importance of maths for students has never been more prominent. Most university courses include some level of maths while almost every profession uses maths in some form on a daily basis. The problem many students have is that they don’t know how to study maths to get good results.
Maths is one of those subjects which you can easily spend hours studying but end up none the wiser. However much you have studied, if you can not solve the problem on day of the test, you are lost. Thankfully, there are some techniques for studying maths that you can do regardless of your level. You may even end up loving mathematics by the end of the blog post!
einstein quote

 7 Tips for Maths Problem Solving


1. Practice, Practice & More Practice
It is impossible to study maths properly by just reading and listening. To study maths you have to roll up your sleeves and actually solve some problems.  The more you practice answering maths problems, the betterEach problem has its own characteristics and it’s important to have solved it in numerous ways before tackling the exam. There is no escaping this reality, to do well in a Maths exam you need to have solved a LOT of mathematical problems beforehand. 
2. Review Errors
When you’re practising with these problems, it’s important to work through the process for each solution. If you have made any mistakes, you should review them and understand where your problem-solving skills let you down. Understanding how you approached the problem and where you went wrong is a great way of becoming stronger and avoiding the same mistakes in the future.
3. Master the Key Concepts
Do not try to memorise the processes. This is counter-productive. It is much better and rewarding in the long-run to focus on understanding the process and logic that is involved. This will help you understand how you should approach such problems in the future.
Remember that Maths is a sequential subject so it’s important to have a firm understanding of the key concepts that underpin a mathematical topic before moving on to work on other, more complex solutions which are based on understanding the basics.
4. Understand your Doubts
Sometimes you can get stuck trying to solve part of a maths problem and find it difficult to move on to the next stage.  It’s common for many students to skip this question and continue on to the next. You should avoid doing this and instead spend time trying to understand the process of solving the problem. Once you have grasped an understanding of the initial problem, you can use this as a stepping stone to progress to the remainder of the question.
Remember: Maths requires time and patience to master.
It is a good idea to study with a friend who you can consult with and bounce ideas off when trying to solve complex problems.
5. Create a Distraction Free Study Environment
Mathematics is a subject that requires more concentration than any other. A proper study environment and a distraction free area could be the determining factor when solving complex equations or problems in geometry, algebra or trigonometry!
Studying with music can help create a relaxing atmosphere and stimulate the flow of information. Havingsuitable background music can foster an environment of maximum concentration. Of course, you should steer clear of Pitbull and Eminem, instrumental music is the best thing in these times. 
Our blog post “Music for Studying: 10 Tips to Pick the Best Study Music” gives more advice on picking the best study music for you.
6. Create a Mathematical Dictionary
Mathematics has specific terminology with a lot of vocabularyWe suggest you create Notes orFlashcards with all the concepts, terminology and definitions you need to know. You should include their meanings, some key points and even some sample answers so you can consult them at any time and recap.
7. Apply Maths to Real World Problems
As much as possible, try to apply real-world problems when approaching maths. Maths can be very abstract sometimes so looking for a practical application can help change your perspective and assimilate ideas differently.
Probability, for example, can be used in everyday life to predict the outcome of something happening and determine whether you want to take a risk such as if you should buy a lottery ticket or gamble.
Oh and don’t forget that it’s also important to have confidence in yourself and face the exam knowing that you have prepared properly!

Sunday, March 6, 2016

Calcutta Club The Telegraph National Debate 2016





      What: Camellia Group presents Calcutta Club The Telegraph National Debate 2016
      Where: Calcutta Club lawns
      Motion: In the opinion of the house tolerance is the new intolerance
      Verdict: Dead heat or tie, after show of hands


    According to me the well charged debate was well coordinated by Mr.Mukul Keshavan.Suhel Seth gave a nice introductory speech, though against team had stronger opinion the debate was still drawn. Anupam Kher was more interested on saving his and BJPs face rather than to debate on the topic while Mr.Surjewala was inclined to blame BJP holding a list of atrocity.Kajol's speech was plain and simple, while Justice Ashok Ganguly spoke about Supreme court order and challenged the supreme court. Atlast Barkha Dutt's speech concluded with some strong points supporting Kanhaiya Kumar. In mine opinion the against team was better.I have provided the synopsis of the speeches to let you decide yourself. 
     


    FOR
     Suhel Seth
     Marketing maven
     What we should really be intolerant about is intolerance itself. What  we should be intolerant about is poverty, the subjugation of rights  and opportunities. Why am I being part of an intolerance discourse  when actually I am not intolerant? Why are we dividing India on  lines of caste and creed and religion and exposing every little  nuanced statement put out by stupid people as the final yardstick of  this particular government… and I don’t mean this particular  government… I mean that particular government. I am not for once  supporting the fact that the Prime Minister doesn’t speak up when  he should. I think he should… but that’s for the Prime Minister to  decide.
     We don’t need a media circus playing on our television channels  every evening, almost suggesting that our idea of India has either  failed or is about to diminish. Because the idea of India is stronger than stupid utterances that will be made in a democracy as vibrant as ours. What’s happened today is that we are living in media circus times… so if an idiot says something stupid, and there are many across political parties, those become the national discourse.
    We are still a tolerant country. Don’t get taken in by this whole mantra of intolerance. There are stupid things happening in this country, but people will understand that basic commodities and basic rights of humanity are more important than beef bans. People will realise that you can’t alter the discourse of this country on the basis of one ideology, one principle or one faith. 
    We need to be more tolerant about the word ‘intolerance’. We believe in a holistic and composite India.
    Kajol
    Actress
    I’ll leave the politics and speak about intolerance elsewhere… meaning myself! 
    I have always been an intolerant girl. Twenty years ago, I was pictured as a demure and docile Indian girl being brought up in London by a caring and strict father who allowed me to go on my first Europe trip with friends. And there I met this boy who — quite famously — held my outstretched hand and pulled me into a train’s compartment. But once on the train, he and I were so totally on the wrong track. After all, how could any good Bharatiya nari ever tolerate someone as frisky and flirtatious as this boy called Raj, with overgrown hair and undergrown manners. The boy I was seriously intolerant of back in 1995, was Shah Rukh Khan. It was only later that I as Simran managed to not just tolerate him but also fall madly in love with because, after all, the Dilwale had to take the Dulhania away!
    In 1998, I was flying from Paris to India... on the flight I met Shekhar, who managed to irritate me in so many ways. I was severely intolerant of him until I realised he had a heart of gold.... After all, Pyaar Toh Hona Hi Tha. A year later, reel turned to real and I was married to this man you all know as Ajay Devgn. 
    Those who know me and my family have often said that this intolerance runs in our blood.... There always has been intolerance in India. There is intolerance because the society is not perfect.  There are fault lines. We all need to work together to make a stronger and a richer India. An India where there is much less poverty and inequality. Only then will intolerance cease to exist.
     Anupam Kher
     Actor
     Had any of you heard of the word ‘intolerance’ till seven or eight  months ago? You hadn’t, because this is a term that’s been  marketed. It’s a result of the drubbing that the Opposition got at the  hands of the ruling party. The Prime Minister hasn’t taken a single    day of leave in the last two years… let him work for five years and    then decide... I am not advocating him, I am just speaking as a  citizen of this country.
     Many people say I speak for the BJP because of my wife. I have  been married to Kirron for the last 30 years… I don’t have to prove  my loyalty to her by speaking on behalf of the BJP.  You can’t  tolerate the fact that our Prime Minister goes on foreign tours and speaks about the idea of India… for 10 years, you have tolerated a Prime Minister who didn’t say a word. 
    There has been no talk of corruption over the last two years, but for 10 years before that, there was only talk about corruption... 2G, 3G, e ji, o ji…. People in India, in general, are tolerant. The only ones who talk about intolerance are the intellectuals… the rich and famous who travel with 20 bodyguards, sip on champagne and talk about intolerance. The man on the street doesn’t even know the word ‘intolerance’. The American Presidential candidate (Donald Trump) says that Muslims should be thrown out of the country… that’s intolerance.
    The most tolerant people in the country are the Congress. They are tolerating a person who they want to project as a Prime Minister of this country and they can’t even say to each other, ‘We are wrong!’ If you can tolerate that person, then you can tolerate anything in the world.
    VS
    AGAINST
    Asok Ganguly
    Retired judge of Supreme Court
    In a school in Kerala the national anthem was sung and three schoolchildren respectfully stood up for the anthem but they did not sing. Initially the school authorities overlooked it, till it caught the notice of a patriotic gentleman who happened to be a member of the Assembly. He raised it and ultimately the students were expelled. They challenged it before the courts and the Supreme Court... in upholding the rights of the children made a very prophetic statement in its concluding part of the judgment. The Supreme Court said: “Our tradition teaches tolerance, our philosophy preaches tolerance, our Constitution practises tolerance. Let us not dilute it”. In the wake of aggressive nationalism of the present scenario this may sound a little strange to many ears but this is the crux of tolerance in our Constitution.
    In the Preamble the greatest emphasis has been given on individual dignity and individual dignity has been equated with the unity and integrity of the nation. You cannot allow the citizens to maintain their dignity if you rob them of their basic freedom. If today I become answerable for eating a particular food, or if my house is raided for storing beef... where is my dignity, where is my moral autonomy, where is my freedom? This is what is happening today and we condemn this as acts of intolerance.
    I condemn intolerance in any form and I think without tolerance you cannot have cultural pluralism nor can we have multi-cultural existence in India. India is not meant for these intolerant people.
     Randeep Surjewala
     Congress MLA
     Shall we forget compassion because another one is cruel? Shall we  give up love and affection because another one spurns us? Shall  we forget humility because another one is arrogant? Shall we give  up tolerance because another one is intolerant? The answer is  plain and simple. No.
     And while I say this, I know that in today’s times if you are inclusive,  if you are tolerant, if you are passionate you will be hounded, you  will be persecuted and you’ll be trolled, by those who stridently  oppose compassion and tolerance. But does it mean that the fringe  has become the mainstream? Does it mean that if you disagree with  the ruling establishment, then I am the enemy? Does it mean dissent is anti-national? Does it mean I need to carry a certificate of patriotism everywhere I go? The answer is again plain and simple. No.
    While I say this I am painfully aware that the fault lines of identity, of religion, of caste, of region have become very, very sharp. The last 22 months of this government... it often appears that this is the mainstream discourse. But is it? Because its intensity and its noise is so strong and so loud that all sanity appears to have been lost in the din, so naturally it looks as if intolerance is the new tolerance….
    India’s DNA is about compassion, it is about cohabitation and it is about coexistence. We are a nation that enabled the birth of different religions and adopted many religions and still thrived. I am confident that no government or organisation can take away our DNA of compassion, coexistence and cohabitation.
    Barkha Dutt
    Journalist
    I am going to ask all of you to step back from the politics, the theatrics, the histrionics and... let’s talk instead of the environment that we operate in today, and who has created that environment. Is it politicians, or is it all of us? Have we as Indians forgotten the art of conversation?
    As a television host... I worry most of all for the intolerance of my own fraternity, the media. I worry at how we somehow have converted news into theatre and our narratives have become reductionist and I am afraid in this city, which prides itself on its intelligence, I know that all of you will agree with me that certain narratives are dumbing us down. We are more intelligent than this nationalism versus anti-nationalism narrative. We are proud Indians and we do not need anybody to certify that for us.
    The young man I met last night…. I asked him, ‘There’s a word these days that has become very controversial, that word is called ‘azadi’. I said ‘can you define azadi in one sentence?’ And he said: ‘Azadi for me is the freedom to implement the Indian Constitution’. Who said this? A boy charged with sedition called Kanhaiya Kumar. This was his definition of azadi. Not azadi from India but azadi in India. 
    We the people who are tolerant, who want to live and let live, who want to let people wear what they want and yes, eat beef if they want.... Secularism was dear to me, my politicians took it away from me, so today I say pluralism. Nationalism was dear to me... but today they have taken away that word from me and I have to look for another word.
    Mukul Kesavan
    moderator
    If I was arguing this for the proposition I would argue that in the last few months within the political context of India, a bunch of isolated and abhorrent incidents have been stitched into a sinister pattern and this, in a sense, is used to exclude legitimate political voices that arguably won the last general election. 
    If I was arguing this against the proposition, I would argue that the call for intolerance is never merely rhetorical. Reason why so many people have made a case against the present political climate is because they believe an attempt is being made to rig the political discourse of the republic in a majoritarian way… that there is, in a sense, a state that acts as a patron for civil society movements to try and shut down what the nation has always been known for, which is almost a form of anarchic pluralism




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The Lost Man: Chicharito

    Javier Hernández
    Footballer
    Javier Hernández Balcázar is a Mexican professional footballer who plays as a forward for German club Bayer Leverkusen and the Mexico national team. Hernández is commonly known by his nickname, Chicharito, which he wears on his shirt. Wikipedia
    BornJune 1, 1988 (age 27), Guadalajara, Mexico
    Height1.75 m
    Salary4.68 million GBP (2014)

    The Mexican after having very less play time in Manchester United was loaned to Real Madrid in the summer transfer window of 2014. Chicharito as a second man to Karim Benzema scored crucial goals but was sent back to Manchester United in the next season. United boss Van Gaal considered Chicharito surplus to requirement after signing 18 years old French star Antony Martial from Monaco. Javier was sold to Leverkusen very cheap. Now after a year at Leverkusen Javier is just one of the best strikers in bundesliga.
    Needless to say his old club Manchester United wants him back but Leverkusen has indicated that they will not let him go for cheap. Other top European club including Chelsea, Liverpool, Athletico Madrid, Juventus are after his signature. Time will only show where this underrated talented striker will go.