National Standard Examination in Physics (NSEP) Solved Paper 2016 Part-2

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Q: 4. A cup of water is placed in a car moving at a constant acceleration a to the left. Inside the water is a small air bubble. The figure that correctly shows the shape of the water surface and the direction of motion of the air bubble is.

(A)

Q 4 A Image of Cup of Water is Placed in a Car Moving at a Constant Acceleration

Cup of Water is Placed in a Moving Car A

Q 4 A Image of Cup of Water is Placed in a Car Moving at a Constant Acceleration

(B)

Q 4 B Image of Cup of Water is Placed in a Car Moving at a Constant Acceleration

Cup of Water is Placed in a Moving Car B

Q 4 B Image of Cup of Water is Placed in a Car Moving at a Constant Acceleration

(C)

Q 4 C Image of Cup of Water is Placed in a Car Moving at a Constant Acceleration

Cup of Water is Placed in a Moving Car C

Q 4 C Image of Cup of Water is Placed in a Car Moving at a Constant Acceleration

(D)

Q 4 D Image of Cup of Water is Placed in a Car Moving at a Constant Acceleration

Cup of Water is Placed in a Moving Car D

Q 4 D Image of Cup of Water is Placed in a Car Moving at a Constant Acceleration

Answer: (D)

Q: 5. A sphere of radius R made up of Styrofoam (light polystyrene material) has a cavity of radius R/2. The centre of the cavity is situated at a distance of R/2 from the centre of the Styrofoam sphere. The cavity is filled with a solid material of density five times that of Styrofoam. Now, the centre of mass is seen to be located at a distance x from the centre of Styrofoam sphere, therefore x is.

(A) R/2

(B) R/3

(C) R/4

(D) R/6

Answer: (D)

Q: 6. A resistor R is connected to a parallel combination of two identical batteries each with emf E and an internal resistance r. The potential drop across the resistance R is

(A)

(B)

(C)

(D)

Answer: (A)

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