# National Standard Examination in Physics (NSEP) Solved Paper 2016 Part-13

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Q: 45. An unpolarized light of intensity 32 passes through three polarizers, such that the transmission axis of last polarizer is crossed with that of the first. If the intensity of emergent light is the angle between the transmission axes of the first two polarizers is

(A) 30°

(B) 19°

(C) 45°

(D) 90°

Answer: (A)

Q: 46. An electron is injected directly towards the centre of a large metal plate having a uniform surface charge density of The initial kinetic energy of the electron is The electron is observed to stop as it just reaches the plate. Therefore the distance between the plate and the point from where the electron was injected is

(A)

(B)

(C)

(D) Data insufficient

Answer: (A)

Q: 47. Graphs (drawn with the same scale) showing the variation of pressure with volume for a certain gas undergoing four different cyclic processes A, B, C and D and D are given below. The cyclic process in which the gas performs the greatest amount of work is

(A)

(B)

(C)

(D)

Answer: (D)

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