National Standard Examination in Physics (NSEP) Solved Paper 2016 Part-17

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Q: 60. The variation of velocity with time of a toy car moving along a straight line is as shown below. Which of the following graphs correctly represents the variation of acceleration with time for the toy car?

Q 60 Graphs of Variation of Velocity

Q 60 Graph of Velocity

Q 60 Graphs of Variation of Velocity

(A)

Q 60 Graphs of Variation of Acceleration A

Q 60 Graphs of Variation of Acceleration A

Q 60 Graphs of Variation of Acceleration A

(B)

Q 60 Graphs of Variation of Acceleration B

Q 60 Graphs of Variation of Acceleration B

Q 60 Graphs of Variation of Acceleration B

(C)

Q 60 Graphs of Variation of Acceleration C

Q 60 Graphs of Variation of Acceleration C

Q 60 Graphs of Variation of Acceleration C

(D)

Q 60 Graphs of Variation of Acceleration D

Q 60 Graphs of Variation of Acceleration D

Q 60 Graphs of Variation of Acceleration D

Answer: (D)

In Q. Nos. 61 to 70 any number of options (1 or 2 or 3 or all 4) may be correct. You are to identify all of them correctly to get 6 marks. Even if one answer identified is incorrect or one correct answer is missed, you get zero marks.

Q: 61. A particle moves in XY Plane according to the relations x = kt and y = kt(1-pt) where k and p are positive constants and t is time. Therefore,

(A) The trajectory of the particle is parabola

(B) The particle has constant velocity along X axis

(C) The force acting on the particle remains in the same direction even if both k and p are negative constants

(D) The particle has a constant acceleration along – Y axis

Answer: (ABCD)

Q: 62. A charge q is situated at the origin. Let and be the electric fields at the points Therefore

(A)

(B) No work is done is done in moving a test charge from B to C.

(C)

(D)

Answer: (ABC)

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