11th class (Fsc) Physics unit 3 MCQs
chapter 3 MCQs 11th Class Physics
Motion and Force:
1. Shortest distance between two points is called:
a. Distance
b. Speed
c. Displacement
d. Acceleration
2. The velocity of a free falling body just before hitting the ground in 9.8ms-1
, theheight through which it fall be:
a. 4.9 m
b. 98 m
c. 9.8 m
d. 16.6 m
3. Specify the correct statements:
a. An object can have a constant velocity even its acceleration is not zero
b. An object can have a constant velocity even its speed is changing
c. An object subjected to a constant acceleration can reverse its velocity
d. An object can have a constant velocity even its velocity is changing
4. Speed having uniform acceleration of 10ms-2 has a velocity of 100ms-1 . In what time its velocity will be doubled?
a. 12 sec
b. 8 sec
c. 14 sec
d. 10 sec
5. When average velocity becomes equal to instantaneous then it is called moving with:
a. Constant velocity
b. nstantaneous acceleration
c. Variable velocity
d. Constant acceleration
6. If a mass of a body is doubled, then acceleration becomes:
a. One fourth
b. Double
c. Constant
d. Half
7. A mass of 1kg is freely falling. The force of gravity is:
a. 0.5 N
b. 1 N
c. Zero
d. 9.8 N
8. When a ball is thrown straight up, the acceleration at its highest point is:
a. Zero
b. Upward
c. Horizontal
d. Downward
9. Unit of acceleration is:
a. ms-2
b. ms
c. m2s
d. ms
10. A body covers a distance of 10m in 1 sec with a constant velocity of 10ms-1 .Acceleration produced by the body is:
a. 5 ms-2
b. 0 ms-2
c. 10 ms-2
d. 2 ms-2
11. A bullet shot straight up, returns to its starting point in 10 sec. its initial speed was;
a. 49 ms-1
b. 9.8 ms-1
c. 98 ms-1
d. 24.5 ms-1
12. Distance covered by a freely falling body in 2 seconds will be:
a. 19.4 m
b. 9.8 m
c. 19.6 m
d. 19.2 m
13. The slope of velocity time graph at any instant represents:
a. Instantaneous acceleration
b. Force
c. Power
d. Acceleration
14. If the slope of a velocity-time graph gradually decreases then body is said to be moving with:
a. Uniform velocity
b. Negative acceleration
c. Positive acceleration
d. None
15. Slope of velocity time graph describes a physical quantity called:
a. Average acceleration
b. Displacement
c. Momentum
d. Average velocity
16. The slope of velocity time graph gives:
a. Acceleration
b. Speed
c. Displacement
d. Torque
17. he slope of velocity-time graph at any instant represents:
a. Instantaneous acceleration
b. Instantaneously velocity
c. Power
d. Force
18. If velocity-time graph is parallel to time axis, then acceleration of moving body will by:
a. Zero
b. Maximum
c. Negative
d. Positive
19. If the slope of the velocity-time graph remain constant then body is moving with:
a. Variable acceleration
b. Uniform velocity
c. Uniform acceleration
d. Negative variable acceleration
20. The slope of velocity time graph shows the:
a. Average force acting on the body
b. Total distance covered by the body
c. Total work done on the body
d. Average acceleration of the body
21. When the body moves with constant acceleration, the velocity time-graph is:
a. Straight line
b. Parabola
c. Curve
d. Hyperbola
22. The area between velocity-time graph and the time axis is numerically equal to:
a. Average velocity of the object
b. Speed of object
c. Acceleration of the object
d. Distance covered by the object
23. The distance covered by a body in time “t” starting rest is:
a. a2 1/2
b. at2
c. at2/2
d. v2/t
24. A ball is dropped from rest position from a high tower. The distance covered by it in 2 seconds during freely falling is:
a. 19.6 m
b. 9.8 m
c. 39.2 m
d. 4.9 m
25. A body having uniform acceleration of 10 ms-2 has a velocity of 100 ms-1 . Inwhat time its velocity will be doubled:
a. 12sec
b. 8sec
c. 14sec
d. 10sec