# KVPY 2016

Cheers!

Note by Harsh Shrivastava
4 years, 8 months ago

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

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OK so I found q 17,22,27,67,70 ans incorrect

- 4 years, 8 months ago

What is getting for Q67 and Q70?

- 4 years, 8 months ago

Yes 17,22, 67 and 70 are incorrect but 27 is correct

- 4 years, 8 months ago

You need to calculate the maxheight attained from ground....you might have calculated it from top of the tower perhaps.....anyway don't worry it happens....exam pressure.....

- 4 years, 8 months ago

@Spandan Senapati ,Shouldn't the answer of q-27 be option B?

- 4 years, 8 months ago

Ya option B is correct for q 27....

- 4 years, 8 months ago

Bio was damn difficult ....

- 4 years, 8 months ago

How much are you getting?

- 4 years, 8 months ago

I did not check the answer key , how much are you getting ? which problem in mathematics did you like most ?

- 4 years, 8 months ago

All questions were of good level and interesting.I am expecting about 47-50.

- 4 years, 8 months ago

Yeah! You are right. Biology troubled me a lot too, I wonder how much I will lose due to it.

- 4 years, 8 months ago

How much are you scoring?

- 4 years, 8 months ago

Let the answer key come, till then I have no estimation. Overall, my exam was bad 😥😥

- 4 years, 8 months ago

Wasn't biology too tough in SA Stream?

- 4 years, 8 months ago

I think I was giving AIPMT 😨

- 4 years, 8 months ago

AIPMT(actually NEET) asks most of the questions from NCERT. but here good amount of concepts were required

- 4 years, 8 months ago

Yeah it was horrible. I will get between 40 and 50.

- 4 years, 8 months ago

yes it was a bit tough.

- 4 years, 8 months ago

Probably cutoff will fall drastically this year.

- 4 years, 8 months ago

Scoring above 50 was a herculean task!!!

- 4 years, 8 months ago

.let's wait for the key.....and bio was not difficult....the options were not at all confusing...a little thinking and you know what the ans is......there were q where only one option was apparent......

- 4 years, 8 months ago

Think my score is gonna be in 71-75....let's see.....

- 4 years, 8 months ago

Wow.....then congratulations!!!!! I don't even think of crossing 50.

- 4 years, 8 months ago

Good job!. although i haven't seen the paper i too scoreD about 73 last year.

If you do fair enough in interview you will surely be in top 100!

- 4 years, 8 months ago

I expect 73.25 after the correct ans key...and you know in 2014 someone had scored 78 from our school and got air 8!!!!.

- 4 years, 8 months ago

actually 2014 paper was quite tough (cutoff was only 42). so scoring 78 in that is indeed an achievement

i got rank 59 last year coz the paper was slightly easier last year than 2014 . One of my friend got 82 last year still ended up on rank 14

- 4 years, 8 months ago

How do you rate this years q paper......???

- 4 years, 8 months ago

I Think its more or less of same level as last year (atleast for PCM) . Biology its none of my buisness

- 4 years, 8 months ago

Actually bio is the one making difference this year.

- 4 years, 8 months ago

i scored 6 last year out of 25.

- 4 years, 8 months ago

Great!!!

- 4 years, 8 months ago

:P. What do you mean? :P

- 4 years, 8 months ago

That is more that my score in bio.

- 4 years, 8 months ago

@prakhar bindal...Can you tell if q. 17 and is correct....

- 4 years, 8 months ago

Ya bio was not high scoring.....this year.....and maths was better then previous years..as of P,C they were quite the same...

- 4 years, 8 months ago

- 4 years, 8 months ago

The key is incorrect....physics especially....

- 4 years, 8 months ago

Please tell me question numbers you are finding wrong.As of now, i am scoring too low.

- 4 years, 8 months ago

My marks: 40-45. :(

- 4 years, 8 months ago

Same here. :(

- 4 years, 8 months ago

Do add ,5 more marks...friend the key is a bit incorrect....

- 4 years, 8 months ago

Like which questions? I may not have attempted the ones you are saying.

- 4 years, 8 months ago

@Harsh Shrivastava @Kalash Verma @Adarsh Kumar What is your score (including the ones you have done correctly but printed wrong in the keys)? apna apna batao sab

- 4 years, 8 months ago

Kindly confirm the answer for the conditions for current to flow in the wire connected to circuits.

I marked “current will flow if E1/R1 not equal to E2/R2.”

I know that if the wire connects 2 points, then those 2 points potential is same. But I got confused during exam and trusted "Kirchoff's law" for junctions.

- 4 years, 8 months ago

Even I marked the same option :(

- 4 years, 8 months ago

To make things simple think this way....the circuits are initially separate..consider any one of the circuit.... current is e/r....now connect them write Kirchoff's voltage law for the same circuit......did you find that the current again remains the same......so what can be concluded is that current did not flow through the wire.....

- 4 years, 8 months ago

Oh. Thanks.

- 4 years, 8 months ago

How much are you scoring?

- 4 years, 8 months ago

I barely completed the paper.. I don't remember exactly what I marked, what questions I marked.. So I didn't count..

- 4 years, 8 months ago

No problem....All the best !!!

- 4 years, 8 months ago

Can anyone tell the solution of Q4. KVPY SA?

- 4 years, 8 months ago

Apply Cauchy Schwarz inequality on LHS,you will observe that LHS is greater than equal to the RHS.Then apply the equality condition Cauchy Schwarz inequality( in Cauchy Schwarz inequality,the equality exists when the ratio of terms is constant).You will get that 1=a=b.Therefore (1,1) is the only solution.

- 4 years, 8 months ago

Thanks a lot!

- 4 years, 8 months ago

It can be done without the inequality also-

$(1+a+b)^2=3(1+a^2+b^2)$

$\iff 2a^2+2b^2-2a-2b-2ab+2=0$

$\iff (a-1)^2+(b-1)^2+(a-b)^2=0$

Hence, $a=b=1$ only.

- 4 years, 8 months ago

great solution!!!

- 4 years, 8 months ago

Thanks!

- 4 years, 8 months ago

Thanks!!!

- 4 years, 8 months ago

- 4 years, 7 months ago

Mine is 72.75.

- 4 years, 7 months ago

I Too got this much last year. if you do sufficiently well in interview you will get a decent rank

- 4 years, 7 months ago

Where are the new answer keys?

- 4 years, 7 months ago

Sorry for late reply.was out for school picnic.in official site you can find the answer keys

- 4 years, 7 months ago