Physics MCQ Set 3

Question : If distance between two bodies is doubled and their masses are also doubled the gravitational force will

1. Increase four times
2. Decrease four times
3. Remain constant
4. None of these

Question : The work done by a force acting on a body is maximum when

1. The displacement is zero
2. The force is parallel to the displacement
3. The force is perpendicular to the displacement
4. The force is anti-parallel to the displacement

Question : If a force F moves a body with velocity V then power is

1. F · V
2. F * V
3. F + V
4. F – V

Question : When transverse waves propagate through a medium then the particles of the medium

1. Remain at rest
2. Vibrate along the direction of propagation of waves
3. Vibrate perpendicular to the direction of propagation of waves
4. Vibrate at an angle of 180° with the direction of propagation of waves

Question : When longitudinal waves propagate through a medium, then the particles of the medium

1. Vibrate parallel to the direction of propagation of waves
2. Vibrate perpendicular to the direction of propagation of waves
3. Do not move at all
4. Vibrate at an angle of 270° to the direction of waves

Question : If a transverse wave has a speed of 100m/sec and frequency of 100 hertz then its wavelength will be

1. 1 m
2. 10 m
3. 100 m
4. 1000 m