• 9702 June 2007 Paper 1 Worked Solutions | A-Level Physics

Paper 1

1 C                  11 B                21 C                31 D

2 D                  12 B                22 A                32 A

3 A                  13 B                23 D                33 C

4 C                  14 C                24 D                34 A

5 A                  15 A                25 C                35 C

6 D                  16 C                26 D                36 C

7 C                  17 C                27 A                37 C

8 A                  18 B                28 D                38 A

9 B                  19 A                29 A                39 D

10 B                20 B                30 B                40 C

Notes for some specific questions:

3 - Ans: A. {Detailed explanations for this question is available as Solution 401 at Physics 9702 Doubts | Help Page 74 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-74.html}


4 - Ans: C. {Detailed explanations for this question is available as Solution 542 at Physics 9702 Doubts | Help Page 106 - http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-106.html}



7 - Ans: C. {Detailed explanations for this question is available as Solution 553 at Physics 9702 Doubts | Help Page 108 - http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-108.html}



8 - Ans: A. {Detailed explanations for this question is available as Solution 422 at Physics 9702 Doubts | Help Page 80 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-80.html}


9 - Ans: B. {Detailed explanations for this question is available as Solution 594 at Physics 9702 Doubts | Help Page 117 - http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-117.html}



10 - Ans: B. {Detailed explanations for this question is available as Solution 548 at Physics 9702 Doubts | Help Page 107 - http://physics-ref.blogspot.com/2015/04/physics-9702-doubts-help-page-107.html}


11 - Ans: B. {Detailed explanations for this question is available as Solution 218 at Physics 9702 Doubts | Help Page 35 - http://physics-ref.blogspot.com/2014/12/physics-9702-doubts-help-page-35.html}


12 - Ans: B. {Detailed explanations for this question is available as Solution 427 at Physics 9702 Doubts | Help Page 81 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-81.html}

13 - Ans: B. {Detailed explanations for this question is available as solution 89 at Physics 9702 Doubts | Help page 16 - http://physics-ref.blogspot.com/2014/11/physics-9702-doubts-help-page-16.html}


14 - Ans: C. 


15 - Ans: A. {Detailed explanations for this question is available as Solution 1076 at Physics 9702 Doubts | Help Page 227 - http://physics-ref.blogspot.com/2015/12/physics-9702-doubts-help-page-227.html}


17 - Ans: C. {Detailed explanations for this question is available as Solution 967 at Physics 9702 Doubts | Help Page 199 - http://physics-ref.blogspot.com/2015/09/physics-9702-doubts-help-page-199.html}

18 – Ans: B. The shaded area represents the recoverable elastic potential energy stored at maximum extension while the area between the 2 curves represents the energy transformed into heat during the complete cycle   

19 - Ans: A. {Detailed explanations for this question is available as Solution 917 at Physics 9702 Doubts | Help Page 188 - http://physics-ref.blogspot.com/2015/08/physics-9702-doubts-help-page-188.html}

20 - Ans: B. {Detailed explanations for this question is available as Solution 756 at Physics 9702 Doubts | Help Page 152 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-152.html}

22 - Ans: A. {Detailed explanations for this question is available as Solution 736 at Physics 9702 Doubts | Help Page 149 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-149.html}

23 – Ans: D. {Detailed explanations for this question is available as Solution 383 at Physics 9702 Doubts | Help Page 70 - http://physics-ref.blogspot.com/2015/02/physics-9702-doubts-help-page-70.html}

27 – Ans: A. A node, which is represented by a point in the diagram, is always formed at the closed end of the pipe [So, D is incorrect] and an antinode is always formed at the open end of the pipe [So, C is incorrect]. At a node, the direction of motion changes [since if we consider the graph, the displacement before/after the node may be in one direction and the other displacement after/before the node is in another direction] So, B is incorrect and A is correct.   

30 - Ans: B. {Detailed explanations for this question is available as Solution 929 at Physics 9702 Doubts | Help Page 191 - http://physics-ref.blogspot.com/2015/08/physics-9702-doubts-help-page-191.html}


31 - Ans: D.
What is a correct statement of Ohm’s law?

33 - Ans: C. {Detailed explanations for this question is available as Solution 434 at Physics 9702 Doubts | Help Page 82 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-82.html}


34 - Ans: A. {Detailed explanations for this question is available as Solution 439 at Physics 9702 Doubts | Help Page 83 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-83.html}


36 - Ans: C. {Detailed explanations for this question is available as Solution 442 at Physics 9702 Doubts | Help Page 84 - http://physics-ref.blogspot.com/2015/03/physics-9702-doubts-help-page-84.html}

37 – Ans: C. {Detailed explanations for this question is available as Solution 749 at Physics 9702 Doubts | Help Page 151 - http://physics-ref.blogspot.com/2015/05/physics-9702-doubts-help-page-151.html}

40 – Ans: C. {Detailed explanations for this question is available as Solution 971 at Physics 9702 Doubts | Help Page 200 - http://physics-ref.blogspot.com/2015/09/physics-9702-doubts-help-page-200.html}

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.