National Standard Examination in Physics (NSEP) Solved Paper 2016 Part-14

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Q: 48. A rectangular metal tank filled with a certain liquid is as shown in the figure. The observer, whose eye is in level with the top of the tank can just see the coener E of the tank. Therefore, The refractive index of the liquid is

Q 48 Image of Rectangular Metal tank with Certain Liquid

Q 48 Image of Rectangular Metal Tank with Certain Liquid

Q 48 Image of Rectangular Metal tank with Certain Liquid

(A) 1.67

(B) 1.50

(C) 1.33

(D) 1.25

Answer: (D)

Q: 49. As shown in the figure, a block of mass m is suspended from a support with the help of system of identical springs. The force constant of each spring is k. Therefore, the frequency of oscillations of the block is.

Q 49 Block Diagram of Mass Identical Springs

Q 49 Block Diagram of Mass Identical Springs

Q 49 Block Diagram of Mass Identical Springs

(A)

(B)

(C)

(D)

Answer:(D)

Q: 50. The impedance (Z) of three electrical components and has frequency (f) dependence as shown by the following three curves.

Q 50 Image of Impedance of Three Electrical Components

Q 50 Image of Impedance of Three Electrical Components

Q 50 Image of Impedance of Three Electrical Components

The three components are respectively

(A)

(B)

(C)

(D)

Answer:(D)

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