National Standard Examination In Physics (NSEP) Solved Paper 2016 Part-16

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Q: 56. It is observed that some of the spectral lines in hydrogen spectrum have wavelengths almost equal to those of the spectral lines in Out of the following the transitions in that will make this possible is

(A)

(B)

(C)

(D)

Answer: (B)

Q: 57. A simple pendulum has a bob of mass m and a light string of length ℓ. The string is replaced by a uniform rod of mass m and of the same length ℓ. The time period of this pendulum is

(A)

(B)

(C)

(D)

Answer: (B)

Q: 58. A tennis ball is released from a height and allowed to fall onto a hard surface. The graph below shows the variation of the ball with time from the instant of release. The point of upward maximum velocity of the ball is indicated by point

Q 58 Graph of variation of Velocity of the Ball

Q 58 Graph of Variation of Velocity of the Ball

Q 58 Graph of variation of Velocity of the Ball

(A) A

(B) B

(C) C

(D) D

Answer: (B)

Q: 59. The diagram shows an oscillating block connected to two identical springs. The frequency of oscillations can be increased substantially by

Q 59 Image of Oscillating Block and Two Identical Springs

Q 59 Image of Oscillating Block and Two Identical Springs

Q 59 Image of Oscillating Block and Two Identical Springs

(A) Increasing the amplitude of the oscillations

(B) Fixing an extra mass to the block

(C) Using softer pair of springs

(D) Using harder pair of springs

Answer: (D)

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