Multiple Choice Questions
Multiple Choice Questions
Q.1. The branch of Physics which deals with the motion of objects while taking into consideration the cause of motion is:
(a) d ynamics
(b) kinematics
(c) statics
(d) none of these
Q.2. There is an argument about uniform acceleration between Mr X and Mr Y. Mr X says “acceleration means that farther you go faster you go”. Mr Y says “acceleration means that longer you go the faster you go”. Whose statement is correct?
(a) Mr X
(b) Mr Y
(c) both
(d) none
Q.3. Starting from rest at the top of an inclined plane a body reaches the bottom of the inclined plane in 4 second. In what time does the body cover onefourth the distance starting from rest at the top?
(a) 1 second
(b) 2 second
(c) 3 second
(d) 4 second
Q.4. A car travels 100 km east and then 100 km south. Finally, it comes back to the starting point by the south-east route. Throughout the journey the speed is constant at 60 km h-¹. The average velocity for the whole journey if time taken is 3.3 hours is :
(a) 60 km h-1
(b) 90 km h-1
(c) 0 km h-1
(d) 180 km h-1
Q.5. The displacement of a body is proportional to the cube of the time lapsed. The magnitude of the acceleration is :
(a) increasing with time
(b) decreasing with time
(c) constant
(d) zero
Q.6. A particle accelerates from rest at a constant rate for sometime and attains a constant velocity of 8 m s-¹. Afterwards it decelerates with a constant rate and comes to rest. If the total time taken is 4 second, the distance travelled is :
(a) 32 metre
(b) 16 metre
(c) 4 metre
(d) insufficient data
Q.7. For the motion on a straight line path with constant acceleration the ratio of the magnitude of the displacement to the distance covered is :
(a) = 1
(b) ≥1
(c) ≤ 1
(d) < 1
Q.8. A body moving with uniform acceleration has velocities 20 m s-¹ and 30 m s-¹ when passing two points A and B. Then the velocity midway between A and B is :
(a) 25 m s-1
(b) 24 m s-1
(c) 25.5 m s-1
(d) 10√6 m s-1
Q.9. A moving body is covering a distance directly proportional to the square of time. The acceleration of the body is :
(a) increasing
(b) decreasing
(c) zero
(d) constant
Q.10. The area under the velocity-time graph gives the value of :
(a) distance travelled
(b) velocity
(c) acceleration
(d) none of these
Q.11. Which of the following is not a vector?
(a) displacement
(b) velocity
(c) speed
(d) acceleration
Q.12. If the average velocity of a body is equal to mean of its initial velocity and final velocity, then the acceleration of the body is :
(a) variable
(b) zero
(c) negative
(d) uniform
Q.13. The speed-time graph of a body is a straight line parallel to time axis. The body has:
(a) uniform acceleration
(b) uniform speed
(c) variable speed
(d) variable acceleration
Q.14. The velocity-time graph of a body has a negative slope. The body is undergoing:
(a) uniform acceleration
(b) uniform retardation
(c) variable acceleration
(d) variable retardation
Q.15. The distance-time graph of a body is parallel to time axis. The body is:
(a) at rest
(b) in uniform motion
(c) variable motion
(d) cannot say
Q.16. The distance-time graph of a body is a straight line inclined to time axis. The body is in:
(a) uniform motion
(b) uniformly accelerated motion
(c) uniformly retarded motion
(d) rest position
Q.17. Area under velocity-time graph is equal to the :
(a) speed of the body
(b) distance travelled by the body
(c) magnitude of the displacement of the body
(d) none of these
Q.18. Area under speed-time graph is equal to the :
(a) velocity of the body
(b) magnitude of the displacement
(c) distance travelled by the body
(d) none of these
Q.19. The direction of acceleration of an object moving in a circular path is :
(a) directed away from the centre of the circle
(b) directed towards the centre of the circle
(c) directed upward in the plane of the circle.
(d) none of these
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