Friday, January 2, 2015

9702 November 2010 Paper 12 Worked Solutions | A-Level Physics

  • 9702 November 2010 Paper 12 Worked Solutions | A-Level Physics



Paper 12


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



Notes for some specific questions:


3 - Ans: A. {Detailed explanations for this question is available as Solution 795 at Physics 9702 Doubts | Help Page 160 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-160.html}



4 – Ans: C. {Detailed explanations for this question is available as Solution 259 at Physics 9702 Doubts | Help Page 42 - http://physics-ref.blogspot.com/2014/12/physics-9702-doubts-help-page-42.html}


5 – Ans: D. Even with subtraction of data, uncertainty is still added, as arithmetic will show by obtaining highest and lowest possible values for x. So, x = 1.27 – 0.83 = 0.44m. Δx = 0.02 + 0.01 = 0.03m. Percentage uncertainty = (0.03 / 0.44) x 100% = 6.8% = 7%.


7 – Ans: D. {Detailed explanations for this question is available as Solution 125 at Physics 9702 Doubts | Help Page 23 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-23.html}


8 – Ans: A. {Detailed explanations for this question is available as Solution 983 at Physics 9702 Doubts | Help Page 203 - http://physics-ref.blogspot.com/2015/09/physics-9702-doubts-help-page-203.html}


9 – Ans: C. {Detailed explanations for this question is available as Solution 723 at Physics 9702 Doubts | Help Page 146 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-146.html}


11 - Ans: B. {Detailed explanations are available as solution 83 at Physics 9702 Doubts | Help Page 15 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-15.html}


12 - Ans: C. {Detailed explanations for this question is available as Solution 176 at Physics 9702 Doubts | Help Page 29 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-29.html}


13 – Ans: D. {Detailed explanations for this question is available as Solution 785 at Physics 9702 Doubts | Help Page 158 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-158.html}


14 - Ans: D. {Detailed explanations for this question is available as Solution 498 at Physics 9702 Doubts | Help Page 96 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-96.html}


15 - Ans: D. {Explanations are available as solution 69 at Physics 9702 Doubts | Help Page 12 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-12.html}


16 - Ans: B. {Detailed explanations for this question is available as Solution 1115 at Physics 9702 Doubts | Help Page 240 - http://physics-ref.blogspot.com/2016/07/physics-9702-doubts-help-page-240.html}


21 - Ans: A. {Detailed explanations for this question is available as Solution 531 at Physics 9702 Doubts | Help Page 103 - http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-103.html}


22 – Ans: A.{Detailed explanations for this question is available as Solution 760 at Physics 9702 Doubts | Help Page 153 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-153.html}


25 - Ans: D. {Detailed explanations for this question is available as Solution 132 at Physics 9702 Doubts | Help Page 24 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-24.html}


26 - Ans: C. {Detailed explanations for this question is available as Solution 707 at Physics 9702 Doubts | Help Page 143 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-143.html}



27 - Ans: B. {Detailed explanations for this question is available as Solution 446 at Physics 9702 Doubts | Help Page 85 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-85.html}


28 – Ans: A. Deflection is downwards since electric field is from +ve to –ve and the electron would be attracted to the +ve. Here, with the electric field the horizontal velocity remains unchanged but there will be an increase in speed because of the vertical component of velocity given by the electric force to the electron.


31 – Ans: A. Electrons are in random motion, not stationary.


32 – Ans: C. {Detailed explanations for this question is available as Solution 804 at Physics 9702 Doubts | Help Page 161 - http://physics-ref.blogspot.com/2015/06/physics-9702-doubts-help-page-161.html}


33 - Ans: D. {Detailed explanations for this question is available as Solution 712 at Physics 9702 Doubts | Help Page 144 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-144.html}


34 – Ans: B. {Detailed explanations for this question is available as Solution 104 at Physics 9702 Doubts | Help Page 19 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-19.html}


35 - Ans: B. {Detailed explanations for this question is available as Solution 955 at Physics 9702 Doubts | Help Page 197 - http://physics-ref.blogspot.com/2015/09/physics-9702-doubts-help-page-197.html}


40 – Ans: B. Half-life is uncertain because of randomness of decay, but A wrong because time interval between the 424 and 212 readings is 80 minutes, not 90 minutes.






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. 




42 comments:

  1. OCT NOV 10 paper 11 QUESTION 4,5,13,18,22,34,36,37 PLEASE HELP! :(

    ReplyDelete
    Replies
    1. Q4 as solution 450 at
      http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-87.html

      Q5 as solution 105 at
      http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-20.html

      Q13 as solution 460
      http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-89.html


      Q18 as solution 466
      http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-90.html

      Q37 as solution 120
      http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-22.html

      Delete
    2. Q22 as solution 305 at
      http://physics-ref.blogspot.com/2015/01/physics-9702-doubts-help-page-52.html

      Delete
    3. thanks wb qs 36??

      Delete
    4. For question 37,, why no current flows through Q??? and if the voltmeters resisitance is high so a very small current should flow thru it no??

      Delete
    5. Check solution 502 at
      http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-97.html
      for Q36

      Delete
    6. For Q37,
      The flow of current is as follows. ‘+’ terminal of battery to slider to point X to voltmeter and finally back to the ‘-’ terminal of the battery. In this circuit, resistor Q can be considered to be short-circuited.
      Since the resistance is much greater than the maximum resistance of the potentiometer, the voltmeter reading would stay almost 4V, as shown by the potential divider equation.)

      Delete
    7. For Q34, see solution 554 at
      http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-108.html

      Delete
  2. can you please give the solution of november 2010 paper 11 question 8

    ReplyDelete
    Replies
    1. See solution 604 at
      http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-119.html

      Delete
  3. please explain question 28 from november 2011 paper 11 as well

    ReplyDelete
    Replies
    1. See solution 625 at
      http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-123.html

      Delete
  4. For Q9 How I know that the particle is still going in initial direction? Thank You

    ReplyDelete
    Replies
    1. Give me the link for q9 of o/n 10 II

      Delete
    2. Check solution 112 at
      http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-21.html

      Delete
  5. Please explain November 2010 paper 11 question 34. Thank you

    ReplyDelete
    Replies
    1. See solution 554 at
      http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-108.html

      Delete
  6. Can you please tell me why is option A in mcq 13 wrong?

    ReplyDelete
  7. In mcq 32 why not D?

    ReplyDelete
  8. In mcq 32 why not D?

    ReplyDelete
  9. What about q24 in 2010 winter variant 1

    ReplyDelete
    Replies
    1. Check solution 440 at
      http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-84.html

      Delete
  10. Explain QU 12 Please!

    ReplyDelete
  11. Can you please explain q36 in 9702_w10_ms_11 ?

    ReplyDelete
    Replies
    1. Check solution 502 at
      http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-97.html

      Delete
  12. Replies
    1. See solution 140 at
      http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-25.html

      Delete
  13. CAN U PLEASE SOLVE OCTOBER NOVEMBER 2010/V11 Q5,Q9,Q18,Q26,Q36,Q31

    ReplyDelete
    Replies
    1. try to type the following at google search:
      physics ref 9702 november 2011 paper 11 Q5

      change the qu numbers

      Delete

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