(A) no work is done on it
(B) no force acts on it
(C) no acceleration is produced in it
(D) its velocity remains constant
Tag: Physics Mcq
Joule-second is a unit of:
(A) energy
(B) power
(C) momentum
(D) angular momentum
The angular speed of a particle moving along a circle is 4 rad/sec, its time period is:
(A) 𝜋/2 sec
(B) 𝜋/4 sec
(C) 𝜋/12 sec
(D) 3𝜋/2 sec
A car is turning around a corner at 10 m/sec is travelling along an arc of circle. If value of centripetal acceleration is 10 m/sec2, then radius of circle is:
(A) 1 m
(B) 5 m
(C) 10 m
(D) 15 m
The ratio of magnitude of angular velocity of hour- hand of a watch to that of earth’s rotation about its own axis is:
(A) 3:1
(B) 1:3
(C) 2:1
(D) 2:1
The ratio of angular velocities of the hour hand and minute hand of a watch is__.
(A) 1:1
(B) 720:1
(C) 43200: 1
(D) 1: 12
The angular acceleration of a body experiences torque, directed:
(A) Towards the center of the circle
(B) Away from the center of the circle
(C) along the tangent
(D) along the axis of rotation
The ratio of distance to the angular displacement for a body moving in circle of radius 5 m is:
(A) 5 m
(B) 5𝜋 m
(C) 5/𝜋 m
(D) 1/5 m