Physics Past Questions and Answers

If the distance between two suspended masses 10kg each is tripled, the gravitational force of attraction between them is reduced by

A One half
B One third
C One quarter
D One ninth

Question 7:

Two force each of 10N acts on a body, one towards the north and the other towards the east.
The magnitude and the direction of the resultant force are

A 20N, 45Â°E
B 20N, 45°W
C 10âˆš2N, 45Â°W
D 10âˆš2N, 45Â°E

Question 8:

A particle in circular motion performs 30 oscillation in 6 seconds. Its angular velocity is

A 5 rad s^-1
B 6 rad s^-1
C 5Ï€ rad s^-1
D 10Ï€ rad s^-1

Question 9:

The effect of a particle in a fluid attaining its terminal velocity is that the

A Acceleration is maximum
B Weight is equal to the retarding force
C Buoyancy force is equal to the to the viscous retardind force
D Buoyancy force is more than the weight of the fluid displaced

Question 10:

A coin place below a rectangular glass block of thickness 9cm and refractive index 1.5 is viewed vertically above the block. The apparent displacement of the coin is

A 3 cm
B 5 cm
C 6 cm
D 8 cm