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

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) 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) 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) 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) 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

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

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)