Physics MCQS

221. A hail and a raindrop of the same radius are released from the same height, then the raindrop will reach :
A. Before hail
B. After hail
C. At the same time
D. None of them

222. A person standing near the track of a fast-moving train has a tendency to fall towards the train; it is because of :
A. Gravitational attraction
B. High speed
C. Vibration due to the train
D. None of them

223. A falling raindrop acquires terminal velocity on account of :
A. Viscous force of air
B. Thrust of air
C. Small size
D. Density

224. Water leaks out of a hole in the bottom of a water tank. The rate at which water flows out does not depend on:
A. The density of water
B. Acceleration due to gravity
C. Area of the hole
D. The length of the water

225. Which of the following properties a system has to execute SHM:
A. Inertia
B. Elasticity
C. Moment of inertia
D. Both A and B

226. If a pendulum bob is oscillating harmonically with amplitude ‘A’ then its total passage of distance in one oscillation in terms of amplitude :
A. A
B. A/2
C. 2A
D. 4A

227. The tension in the string of a simple pendulum is :
A. Constant all the time
B. Maximum at the extreme position
C. Zero at the mean position
D. Maximum at the mean position

228. If the hollow bob of a simple pendulum is filled with mercury that drains out slowly, its time period :
A. Increases
B. Remains Constant
C. First increases and then decreases
D. First decreases and then increases

229. Change in position is called?
(A) Velocity
B) Displacement
(C) Distance
(D) Speed

230. 1 micrometer is equal to?
(A) 10^3m
(B) 10^-9m
C) 10^-3m
(D) 10^-6m