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, asshown 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)...




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.

33 comments:

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

    ReplyDelete
    Replies
    1. Question 2 has been added

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

      Delete
    3. pls provide help on question number 7 paper 41 june 2014

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

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

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

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

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

      Delete
  5. 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. 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
  6. 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. 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
  7. j 15 p41 ques 9
    please...

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

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

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

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

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

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

      Delete
  11. question 8 please

    ReplyDelete

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