# National Standard Examination in Physics (NSEP) Solved Paper 2016 Part-12

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Q: 41. A block of mass 2 kg drops vertically from a height of 0.4 m onto a spring whose force constant K is 1960 N/m. Therefore, the maximum compression of the spring is

(A)

(B)

(C)

(D)

Answer: (D)

Q: 42. Two block of masses are connected by a light string passing over a light frictionless pulley. The mass is at rest on the inclined plane and mass hangs vartically. The angle of inclination is 30° . Therefore, the force of friction acting on is

(A) N up the plane

(B) 30 N drwn the plane

(C) 40 N up the plane

(D) 40 N down the plane

Answer: (B)

Q: 43. Two particles of masses carry identical charges. Starting from rest they are accelerated through the same potential difference. Then they enter into a region of uniform magnetic field and move along circular paths of radii respectively. Therefore the ratio of their masses is

(A)

(B)

(C)

(D)

Answer: (B)

Q: 44. A fixed horizontal wire M carries 200 A current. Another wire N running parallel to M carries a current I and remains suspended in a vertical plane below M at a distance of 20 mm. Both the wires have a linear mass density Therefore, the current I is

(A) 20 A

(B) 4.9 A

(C) 49 A

(D) 200 A

Answer: (C)

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