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YOUR PARTICIPATION FOR THE GROWTH OF PHYSICS REFERENCE BLOG

Tuesday, June 23, 2015

9702 November 2014 Paper 41 42 Worked Solutions | A-Level Physics

  • 9702 November 2014 Paper 41 & 42 Worked Solutions | A-Level Physics


Paper 41 & 42



Question 1
{Detailed explanations for this question is available as Solution 444 at Physics 9702 Doubts | Help Page 85 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-85.html}





Question 2
{Detailed explanations for this question is available as Solution 877 at Physics 9702 Doubts | Help Page 177 - http://physics-ref.blogspot.com/2015/07/physics-9702-doubts-help-page-177.html}





Question 3
{Detailed explanations for this question is available as Solution 924 at Physics 9702 Doubts | Help Page 190 - http://physics-ref.blogspot.com/2015/08/physics-9702-doubts-help-page-190.html}




Question 4
A small ball rests at point P on a curved track of radius r, as shown in Fig. 4.1. ...





Question 5
{Detailed explanations for this question is available as Solution 619 at Physics 9702 Doubts | Help Page 122 - http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-122.html}





Question 6
{Detailed explanations for this question is available as Solution 700 at Physics 9702 Doubts | Help Page 142 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-142.html}





Question 7
{Detailed explanations for this question is available as Solution 919 at Physics 9702 Doubts | Help Page 188 - http://physics-ref.blogspot.com/2015/08/physics-9702-doubts-help-page-188.html}





Question 8
{Detailed explanations for this question is available as Solution 1051 at Physics 9702 Doubts | Help Page 220 - http://physics-ref.blogspot.com/2015/10/physics-9702-doubts-help-page-220.html}





Question 9
{Detailed explanations for this question is available as Solution 1107 at Physics 9702 Doubts | Help Page 237 - http://physics-ref.blogspot.com/2016/04/physics-9702-doubts-help-page-237.html}




Question 10
An ideal operational amplifier (op-amp) has infinite open-loop gain and infinite input resistance (impedance)...



Question 11
The use of X-rays in medical diagnosis gives rise to an increased exposure of the patient to radiation.



Question 12
A station on Earth transmits a signal of initial power 3.1 kW to a geostationary satellite.  The attenuation of the signal received by the satellite is 190 dB.




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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37 comments:

  1. AnonymousJuly 3, 2015 at 9:12 PM

    pls help!!!! for question no 2 on circular motion

    ReplyDelete
    Replies
    1. AdminJuly 5, 2015 at 2:20 PM

      Question 2 has been added

      Delete
    2. AnonymousSeptember 26, 2016 at 5:24 PM

      Pls provide help on question no. 5 june 2014 paper 42

      Delete
    3. AnonymousSeptember 26, 2016 at 5:26 PM

      pls provide help on question number 7 paper 41 june 2014

      Delete
    4. AdminSeptember 26, 2016 at 9:44 PM

      Go to
      http://physics-ref.blogspot.com/2014/10/9702-june-2014-paper-41-43-worked.html

      Delete
  2. UnknownAugust 17, 2015 at 3:56 PM

    I need help on these question W2014/P41/Q7(a)(i)

    ReplyDelete
  3. UnknownAugust 17, 2015 at 3:57 PM

    I need help on these questions W13/P41/Q7(a)(i)?

    ReplyDelete
    Replies
    1. AdminAugust 19, 2015 at 11:09 AM

      Go to
      http://physics-ref.blogspot.com/2014/06/9702-november-2013-paper-41-42-worked.html

      Delete
  4. UnknownAugust 24, 2015 at 11:09 AM

    question 3?#

    ReplyDelete
  5. david ronaldSeptember 29, 2015 at 7:31 PM

    can you please do s15 qp 42, 9a, how is the change 6.2 and 9bii, why does it RIN has to be between 100 Ω and 10 kΩ?
    thanks :D

    ReplyDelete
    Replies
    1. AdminSeptember 30, 2015 at 2:43 PM

      Check solution 986 at
      http://physics-ref.blogspot.com/2015/09/physics-9702-doubts-help-page-204.html

      Delete
  6. david ronaldSeptember 30, 2015 at 3:14 PM

    for 9bi2ii, i acquired rin to be 2.5 and r out to be 100 ohms using the inverting formula,so why are these values unrealistic?

    ReplyDelete
    Replies
    1. AdminSeptember 30, 2015 at 4:57 PM

      What I meant by unrealistic is that such values of resistances are not used in everyday applications.

      You need to consider things like the current flowing in the circuit. Take a look at the values used in part (a) for instance.

      THe current needs to be extremely small so that a virtual earth (I is approx zero) is produced in the circuit (read more about virtual earth in the application booklet)

      Delete
  7. UnknownSeptember 30, 2015 at 6:23 PM

    s15 qp 42, 1 b, I googled and youtubed as to why the astronauts in space feel weightless and the answer was because the satellite keeps on falling and never manages to actually fall . They say that the satellite is falling perpetually ,because the earth is round and the object has horizontal velocity so it curves away from earth.which makes sense ,but the explanation in the mark scheme is different. is the "gravitational force is ‘equal’ to the centripetal force" because it has a constant orbit? i get the fact that reaction force is difference between FG
    and FC which is zero. But what does reaction for has to do with feeling weight less?

    ReplyDelete
    Replies
    1. AdminOctober 2, 2015 at 3:21 PM

      Check solution 989 at
      http://physics-ref.blogspot.com/2015/10/physics-9702-doubts-help-page-205.html

      Forget about what you read. Try to read the explanation there.

      Delete
  8. AnonymousOctober 9, 2015 at 5:12 PM

    j 15 p41 ques 9
    please...

    ReplyDelete
    Replies
    1. AdminOctober 27, 2015 at 5:15 PM

      See solution 1044 at
      http://physics-ref.blogspot.com/2015/10/physics-9702-doubts-help-page-219.html

      Delete
  9. AnonymousOctober 9, 2015 at 5:16 PM

    j 15 p42 Ques 7

    ReplyDelete
    Replies
    1. AdminOctober 24, 2015 at 5:35 PM

      Check solution 1033 at
      http://physics-ref.blogspot.com/2015/10/physics-9702-doubts-help-page-216.html

      Delete
  10. AnonymousOctober 17, 2015 at 3:04 PM

    j15 p41 Ques 3b(ii)
    please...thank u :)

    ReplyDelete
    Replies
    1. AdminOctober 26, 2015 at 3:06 PM

      Check solution 1043 at
      http://physics-ref.blogspot.com/2015/10/physics-9702-doubts-help-page-218.html

      Delete
  11. AnonymousOctober 17, 2015 at 3:07 PM

    j15p41Ques 10
    please...please..
    thank u in advance

    ReplyDelete
    Replies
    1. AdminOctober 22, 2015 at 5:22 PM

      Check solution 1031 at
      http://physics-ref.blogspot.com/2015/10/physics-9702-doubts-help-page-215.html

      Delete
  12. AnonymousOctober 29, 2015 at 11:03 AM

    question 8 please

    ReplyDelete
  13. AnonymousApril 10, 2016 at 6:35 PM

    Q9 please?

    ReplyDelete
  14. ririDecember 4, 2016 at 11:30 PM

    i have doubt in qtn 4

    ReplyDelete
  15. UnknownMarch 31, 2017 at 2:28 PM

    ques 10 c part i please

    ReplyDelete
  16. AnonymousOctober 3, 2018 at 7:07 PM

    Question number 11?

    ReplyDelete
  17. UnknownAugust 26, 2019 at 9:48 AM

    Question 11 , 12 and 13 please

    ReplyDelete

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