Physics Chapter 1 Entry test MCQs
10. A particle starts from center O towards A then moves along AB and stop at B. if R = 100m then displacement of the particle is
a. 100 m
b. 100 √2 m
c. 100/√2 m
d. None
11. The instantaneous acceleration is the limit of average acceleration as ∆t → 0 is given by
12. If an object is moving with constant velocity of 20ms-1 towards north then its acceleration will be
a. 9ms-2
b. 5ms-2
c. 0ms-2
d. 10ms-2
13. The retardation is defined as
a. Decrease in speed per unit time
b. Increase in velocity per unit time
c. Increase in speed per unit time
d. Decrease in velocity per unit time
14. Consider the acceleration, velocity and displacement of a tennis ball as it falls to the ground and bounces back. Directions of which of these changes in the process
a. Displacement and velocity
b. Velocity only
c. Displacement and acceleration
d. Acceleration, velocity and displacement
15. A particle goes from x = – 2m y = 3m z = 1m to x = 3m y = – m z = 4m Its displacement is:
16. Length of the path of a particle is equal to the magnitude of the displacement of that particle. Shape of the path possible
a. Parabola
b. Circle
c. Straight line
d. Arc of a circle
17. The displacement versus Time Graph for a body moving in straight line is shown in figure. Which of the following regions represents the motion when no force is acting on the body?
a. ab
b. cd
c. bc
d. de
18. The shortest distance between two points is called
a. Speed
b. Acceleration
c. Displacement
d. Velocity
19. Two cars are moving in opposite directions with speed v. What is the magnitude of their relative velocity
a. v/2
b. 0
c. 2v
d. v
20. A man in a car moving with velocity of 36 km/hr. His speed with respect to the car is
a. 36 m/s
b. 10 m/s
c. Infinite
d. Zero
21. A body can have constant velocity when it follows a.
a. Circular path
b. Elliptical path
c. Rectilinear path
d. Parabolic path
22. A man leaves his house for a cycle ride. He comes back to his house after half an hour after covering a distance of one km. What is his average velocity for the ride?
a. 1/2 km per hour
b. 2 km per hour
c. 1/2 km per second
d. 0
23. A particle moves along the sides AB, BC and CD of a square of side 25m with a velocity of 15ms-1. Its average velocity is
a. 10ms-¹
b. 15ms-¹
c. 5ms-¹
d. 7.5ms-¹
24. The figure shows the velocity time graph of a one dimensional motion. which of the following characteristics of the particle is represented by the shaded area.?
a. Distance covered
b. speed
c. Momentum
d. Acceleration
25. Which represents the motion of a car that is travelling along a straight road with a uniformly increasing speed?
