Monday, September 1, 2014

9702 June 2011 Paper 12 Worked Solutions | A-Level Physics

  • 9702 June 2011 Paper 12 Worked Solutions | A-Level Physics


Paper 12




1 C                  11 A                21 C                31 B
2 B                  12 B                22 B                32 C
3 A                  13 D                23 C                33 D
4 D                  14 A                24 B                34 D
5 D                  15 B                25 C                35 A
6 D                  16 C                26 B                36 C
7 D                  17 C                27 D                37 B
8 A                  18 D                28 C                38 C
9 D                  19 D                29 B                39 C
10 B                20 A                30 A                40 B



Notes for some specific questions:


3 - Ans: A. {Detailed explanations for this question is available as Solution 728 at Physics 9702 Doubts | Help Page 147 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-147.html}


4 - Ans: D. {Detailed explanations for this question is available as Solution 879 at Physics 9702 Doubts | Help Page 178 - http://physics-ref.blogspot.com/2015/07/physics-9702-doubts-help-page-178.html}


5 - Ans: D. {Detailed explanations for this question is available as Solution 199 at Physics 9702 Doubts | Help Page 32 - http://physics-ref.blogspot.com/2014/12/physics-9702-doubts-help-page-32.html}


6 - Ans: D. {Detailed explanations for this question is available as Solution 137 at Physics 9702 Doubts | Help Page 24 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-24.html}


7 – Ans: D. {Detailed explanations for this question is available as Solution 811 at Physics 9702 Doubts | Help Page 162 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-162.html}


8 – Ans: A. The graph starts as a parabola since it is initially a graph of s = ½gt2 until air resistance reduces the acceleration to zero (terminal velocity is reached).


9 - Ans: D. {Detailed explanations for this question is available as Solution 845 at Physics 9702 Doubts | Help Page 168 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-168.html}



10 – Ans: B. Since F is proportional to a (with no negative sign), they should be in the same direction. As for the velocity, it is possible that, for example, initially, velocity v is negative, and then it undergoes a positive acceleration. So, velocity does not necessarily need to be in the same direction.


13 - Ans: D. {Detailed explanations for this question is available as Solution 772 at Physics 9702 Doubts | Help Page 156 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-156.html}


14 - Ans: A. {Detailed explanations for this question is available as Solution 508 at Physics 9702 Doubts | Help Page 99 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-99.html}


15 - Ans: B. {Detailed explanations for this question is available as Solution 951 at Physics 9702 Doubts | Help Page 196 - http://physics-ref.blogspot.com/2015/09/physics-9702-doubts-help-page-196.html}


16 – Ans: C. Taking moments about X gives: Clockwise moment = Anticlockwise moment: 10 × ½l = F cos 60° × l (or l x Fsin30o) giving F = 5 / (cos 60°) = 10N



17 – Ans: C. Tension in the elastic is along XY and XZ (4N on each side). Angle XY makes with horizontal, θ = cos-1(30/50). Force = 2(4cosθ) = 2(4x3/5) = 4.8N


18 - Ans: D. {Detailed explanations for this question is available as Solution 536 at Physics 9702 Doubts | Help Page 105 - http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-105.html}


19 - Ans: D.
A hammer with 10 J of kinetic energy hits a nail and pushes it 5.0 mm into a plank.


20 - Ans: A. {Detailed explanations for this question is available as Solution 876 at Physics 9702 Doubts | Help Page 176 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-176.html}


21 - Ans: C. {Detailed explanations for this question is available as Solution 657 at Physics 9702 Doubts | Help Page 131 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-131.html}


23 - Ans: C. {Detailed explanations for this question is available as Solution 788 at Physics 9702 Doubts | Help Page 159 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-159.html}


24 – Ans: B. {Detailed explanations for this question is available as Solution 300 at Physics 9702 Doubts | Help Page 51 - http://physics-ref.blogspot.com/2015/01/physics-9702-doubts-help-page-51.html}
 



26 – Ans: B. The x-axis represents time. So, the period is represented by the (horizontal – along x-axis) separation XY. The y-axis represents displacement. Note that amplitude is the maximum displacement and the term ‘amplitude’ can only be used to represents to peak values of displacement.


27 - Ans: D. {Detailed explanations for this question is available as Solution 852 at Physics 9702 Doubts | Help Page 170 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-170.html}


29 - Ans: B. {Detailed explanations for this question is available as Solution 385 at Physics 9702 Doubts | Help Page 70 - http://physics-ref.blogspot.com/2015/02/physics-9702-doubts-help-page-70.html}


30 - Ans: A. {Detailed explanations for this question is available as Solution 180 at Physics 9702 Doubts | Help Page 29 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-29.html}


31 – Ans: B. {Detailed explanations for this question is available as Solution 815 at Physics 9702 Doubts | Help Page 163 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-163.html}


32 - Ans: C. {Detailed explanations for this question is available as Solution 822 at Physics 9702 Doubts | Help Page 164 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-164.html}


 33 - Ans: D. {Detailed explanations for this question is available as Solution 802 at Physics 9702 Doubts | Help Page 161 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-161.html}
34 – Ans: D. {Detailed explanations for this question is available as Solution 372 at Physics 9702 Doubts | Help Page 67 - http://physics-ref.blogspot.com/2015/02/physics-9702-doubts-help-page-67.html}


 35 - Ans: A. {Detailed explanations for this question is available as Solution 767 at Physics 9702 Doubts | Help Page 155 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-155.html}
36 - Ans: C. {Detailed explanations for this question is available as Solution 601 at Physics 9702 Doubts | Help Page 118 - http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-118.html}


 37 - Ans: B. {Detailed explanations for this question is available as Solution 856 at Physics 9702 Doubts | Help Page 171 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-171.html}


38 - Ans: C.
The diagram shows a d.c. circuit. What is the resistance between the points P and Q due to the resistance network?


Explanations have been provided for questions that were found to be more difficult. If you are having other doubts that have not been explained here, you may ask your questions through comments. 

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83 comments:

  1. UnknownNovember 25, 2014 at 10:53 AM

    question 6 thank you.

    ReplyDelete
  2. UnknownNovember 25, 2014 at 11:59 AM

    10?

    ReplyDelete
  3. Sze TyngNovember 27, 2014 at 12:04 PM

    Can you explain why is C wrong for question 30? Thank you!

    ReplyDelete
  4. AnonymousNovember 27, 2014 at 5:03 PM

    3?

    ReplyDelete
  5. AnonymousNovember 27, 2014 at 8:30 PM

    for 16 why is taking resultant forces not possible
    for instance fsin30 = 10 giving f=20
    thnks (:

    ReplyDelete
    Replies
    1. AdminNovember 27, 2014 at 10:11 PM

      This is not a POINT object. So, taking only the resultant force to be zero will not mean that equilibrium has been reached since the forces do NOT act on the SAME point. In this case, we need to find F such that the resultant TORQUE is zero. That is, there is no turning effect on the rod.

      Delete
  6. AnonymousNovember 27, 2014 at 8:41 PM

    for 25 isnt wavelen of visible light 10^-7 so c/wavelen shud give 10^15 right so why c

    ReplyDelete
    Replies
    1. AdminNovember 27, 2014 at 10:18 PM

      A typical human eye will respond to wavelengths from about 390 to 700 nm. In terms of frequency, this corresponds to a band in the vicinity of 430–790 THz ≈ 10^14Hz.

      Delete
  7. AnonymousMarch 22, 2015 at 12:28 PM

    Question 14 please?

    ReplyDelete
  8. AnonymousMarch 24, 2015 at 6:43 PM

    M/J 11 Paper 13 Question number 17 and 27 pleeeeeease???

    ReplyDelete
    Replies
    1. AdminMay 8, 2015 at 2:47 PM

      Question 17 is explained as solution 672 at
      http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-135.html

      Delete
  9. AnonymousMarch 24, 2015 at 6:56 PM

    MJ 11 paper 13 question 37 PLEASE!!!!

    ReplyDelete
    Replies
    1. AdminMarch 25, 2015 at 11:14 AM

      check at
      http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-94.html

      Delete
  10. AnonymousApril 1, 2015 at 1:06 PM

    q18 m/j 12

    ReplyDelete
    Replies
    1. AdminApril 1, 2015 at 2:11 PM

      Could you specify clearly which year and which variant? I can't figure which it is.

      Delete
  11. AnonymousApril 4, 2015 at 8:11 PM

    question 18 please

    ReplyDelete
  12. AnonymousApril 19, 2015 at 10:33 AM

    36 pls

    ReplyDelete
  13. AnonymousApril 25, 2015 at 12:13 PM

    Q 35 please
    June 2011 Variant 13

    ReplyDelete
    Replies
    1. AdminApril 26, 2015 at 2:55 PM

      See question 622 at
      http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-123.html

      Delete
  14. UnknownMay 14, 2015 at 8:45 PM

    Q14 variant 11 June 2011 please.

    ReplyDelete
    Replies
    1. AdminMay 15, 2015 at 3:25 PM

      See solution 701 at
      http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-142.html

      Delete
  15. UnknownMay 22, 2015 at 12:32 PM

    Q9 and Q10 variant 11?

    ReplyDelete
    Replies
    1. AdminMay 22, 2015 at 3:27 PM

      For Q9, see solution 715 at
      http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-145.html

      For Q10, see solution 729 at
      http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-148.html

      Delete
  16. AnonymousMay 26, 2015 at 11:54 AM

    can u explain question 22 of this paper please ?

    ReplyDelete
  17. AnonymousMay 26, 2015 at 11:58 AM

    sorry that was october 2010 (12) q22 not q22 of this paper

    ReplyDelete
    Replies
    1. AdminMay 26, 2015 at 3:04 PM

      Go to
      http://physics-ref.blogspot.com/2014/11/9702-november-2010-paper-12-worked.html

      Delete
  18. AnonymousMay 26, 2015 at 12:41 PM

    I'd really appreciate it if you could help me out with Q.21 in M/J 2011, variant 12. I can't wrap my head around all the ratios. BTW, awesome job with the site. Just one suggestion. You should put all the Physics doubt page links on a separate page so if someone just wants to skim through the questions, they can do so. Keep up the good work :)

    ReplyDelete
    Replies
    1. AdminMay 26, 2015 at 2:54 PM

      Question 21 has been explained above.

      Yeah, I planned to do it but had too many other things to do- it's gonna be page 0.

      Thanks for the suggestion. I've been hoping for suggestions from those who use the site for a long time but did not receive much.

      I also want to improve it.

      Delete
  19. UnknownMay 27, 2015 at 6:45 PM

    Q35 ?

    ReplyDelete
  20. AnonymousMay 28, 2015 at 11:49 AM

    Question 13 please

    ReplyDelete
  21. taha AshiqMay 31, 2015 at 4:03 PM

    Q23 plz

    ReplyDelete
  22. AnonymousMay 31, 2015 at 5:51 PM

    O/N 2011 variant 11
    q 5,6,18,30,33,36,37.
    Thank you in advance.

    ReplyDelete
    Replies
    1. AdminJune 1, 2015 at 2:39 PM

      For Q36, see solution 790 at
      http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-159.html

      For Q6, see solution 538 at
      http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-105.html

      For Q30, see solution 480 at
      http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-93.html

      Q37, see solution 763 at
      http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-154.html

      Delete
  23. AnonymousJune 1, 2015 at 8:35 AM

    question 33 please

    ReplyDelete
  24. AnonymousJune 2, 2015 at 5:09 PM

    Please explain o/n 2012 13 q 15

    ReplyDelete
    Replies
    1. AdminJune 15, 2015 at 2:57 PM

      See solution 870 at
      http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-174.html

      Delete
  25. AnonymousJune 3, 2015 at 3:56 PM

    Please explain 7.

    ReplyDelete
  26. AnonymousJune 4, 2015 at 7:55 PM

    q8 q9 q13 q20 q33 pls

    ReplyDelete
  27. AnonymousJune 5, 2015 at 1:46 PM

    in q 31 why is option d incorrect

    ReplyDelete
  28. AnonymousJune 5, 2015 at 1:56 PM

    q 32 pls

    ReplyDelete
  29. AnonymousJune 8, 2015 at 9:10 PM

    Can you please add number 37? Thank you

    ReplyDelete
  30. UnknownJuly 13, 2015 at 10:15 PM

    Hi

    Add Q No 4 explanation as soon as possible. I am Muhammad Kamran Khalil from Beaconhouse School System Lahore.

    ReplyDelete
  31. UnknownJuly 23, 2015 at 10:00 PM

    Hi

    Thnks for adding solution.
    Will you please upload the missing variants of MCQs and Theory as earlier as possible like May June 2011 Paper 1 MCQs/ 11 ,
    then Oct Nov 2010 paper 1 MCQs/11
    and i will tell you which other are missing.
    The best thing which I have found on these solutions is detailed explanation.

    Thnks From Muhammad Kamran Khalil

    ReplyDelete
    Replies
    1. AdminJuly 23, 2015 at 10:12 PM

      No problem.
      However, it would be best to specify the questions in these variants. The complete papers themselves may be added some time later.

      Delete
  32. smiley girlAugust 22, 2015 at 10:34 PM

    q24 of june 2011 variant 1 pls

    ReplyDelete
    Replies
    1. AdminAugust 23, 2015 at 5:17 PM

      See solution 924 at
      http://physics-ref.blogspot.com/2015/08/physics-9702-doubts-help-page-189.html

      Delete
  33. smiley girlAugust 29, 2015 at 5:13 PM

    q28 of 11 variant 2011

    ReplyDelete
    Replies
    1. AdminOctober 6, 2015 at 2:23 PM

      See solution 999 at
      http://physics-ref.blogspot.com/2015/10/physics-9702-doubts-help-page-207.html

      Delete
  34. smiley girlAugust 29, 2015 at 5:17 PM

    q29 variant 1

    ReplyDelete
    Replies
    1. AdminOctober 2, 2015 at 3:25 PM

      See solution 991 at
      http://physics-ref.blogspot.com/2015/10/physics-9702-doubts-help-page-205.html

      Delete
  35. smiley girlAugust 29, 2015 at 5:23 PM

    q31, 37

    ReplyDelete
  36. smiley girlSeptember 5, 2015 at 4:05 PM

    in q15 of this paper why cant option a be correct
    thank u

    ReplyDelete
  37. BrokenSmile*ORENDA*October 8, 2015 at 8:16 AM

    can someone give an explanation to question no.5

    ReplyDelete
  38. UnknownOctober 21, 2016 at 7:20 PM

    May june 2011 variant 11 q no.25,26,27,28 please...........

    ReplyDelete
    Replies
    1. AdminOctober 23, 2016 at 3:07 PM

      For Q26, see solution 1126 at
      http://physics-ref.blogspot.com/2016/10/physics-9702-doubts-help-page-243.html

      Delete
  39. AnonymousOctober 21, 2016 at 7:23 PM

    q no. 36 and 37 variant 11...

    ReplyDelete
    Replies
    1. AdminOctober 23, 2016 at 3:09 PM

      they have already been explained. try to type the following at google search:
      physics ref 9702 june 2011 paper 11 Q37

      change the question numbers

      Delete
  40. UnknownAugust 2, 2017 at 2:04 PM

    kindly solve Q.no 27 of P11 may/June 2011...

    ReplyDelete
    Replies
    1. AdminAugust 2, 2017 at 9:29 PM

      see solution 753 at
      http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-152.html

      Delete
  41. UnknownSeptember 23, 2018 at 1:16 PM

    q38

    ReplyDelete
  42. AnonymousDecember 28, 2018 at 2:45 AM

    may/june 2011/11 Q9

    ReplyDelete
    Replies
    1. AdminDecember 28, 2018 at 9:49 PM

      see solution 715 at
      http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-145.html

      Delete

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