9th class Physics unit 2 MCQs
Chapter 2 MCQs 9th Class Physics
Kinematics:
1. Motion of objects is studied in:
a. Plasma
b. Mechanics
c. Sound
d. Light
2. The branch of mechanics which study the motion of an object without discussing its causes and effects is called:
a. Motion
b. Dynamics
c. Mechanism
d. Kinematics
3. The types of mechanics are:
a. Four
b. Two
c. Five
d. Three
4. A body, at a time, can be in the state of:
a. Rest and motion
b. Rest
c. Motion
d. All
5. The state of rest and motion are ……… to each other:
a. Relative
b. Greater
c. Opposite
d. Less
6. A body has translatory motion if it moves along a:
a. Curved path
b. Circle
c. Line without rotation
d. Straight line
7. The motion of a body about an axis is called:
a. Random motion
b. Rotatory motion
c. Vibratory motion
d. Circular motion
8. The straight line motion of a body is called:
a. Random motion
b. Translator motion
c. Vibratory motion
d. Linear motion
9. The motion of a pendulum of a clock is:
a. Linear motion
b. Rotatory motion
c. Random motion
d. Vibratory motion
10. The motion of a steering wheel is:
a. Vibratory motion
b. Random motion
c. Linear motion
d. Rotatory motion
11. To and fro motion of a body about its mean position is called
a. Vibratory motion
b. Rotatory motion
c. Circular motion
d. Random motion
12. See-saw is an example of:
a. Random motion
b. Translatory motion
c .Vibratory motion
d. Linear motion
13. Brownian motion is:
a. Vibratory motion
b. Linear motion
c. Random motion
d. Circular motion
14. The flight of a butterfly is called:
a. Vibratory motion
b. Random motion
c. Rotatory motion
d .Circular motion
15. The motion of a car in a straight line is called:
a. Circular motion
b. Linear motion
c. Rotatory motion
d. Random motion
16. The point around which a body rotates is called:
a. Circle
b. Axis
c. Rotation
d. Mid point
17. Types of motion are:
a. Four
b. Two
c. Five
d. Three
18. Types of translatory motion are:
a. Four
b. Two
c. Five
d. Three
19. The motion of ferris wheel is:
a. Rotatory motion
b. Circular motion
c. Vibratory motion
d. Random motion
20. The motion of a body in a circle is called:
a. Circular motion
b. Random motion
c. Linear motion
d. Vibratory motion
21. Random motion of gas molecules is called:
a. Circular motion
b. Brownian motion
c. Linear motion
d. Random motion
22. In rotatory motion, the line, around which a body moves about, is passing ……… the body:
a. Touching
b. Through
c. Outside
d. None
23. The motion of Earth about its axis is called:
a. Vibratory motion
b. Circular motion
c. Random motion
d. Rotatory motion
24. The motion of swing is called:
a. Translatory motion
b. Vibratory motion
c. Circular motion
d. Rotatory motion
25. Which of the following is a vector quantity?
a. Displacement
b. Speed
c. Power
d. Distance
26. Which is a scalar quantity?
a. Acceleration
b. Force
c. Work
d. Velocity
27. Which one of the following is a vector quantity?
a. Velocity
b. Speed
c. Mass
d. Distance
28. Which one of the following is a vector quantity?
a. Power
b. Force
c. Mass
d. Distance
29. ……… is not a vector quantity?
a. Work
b. Displacement
c. Torque
d. Velocity
30. Which of the following is a scalar quantity?
a. Velocity
b. Force
c. Torque
d. Power
31. Which of the following is not a scalar quantity?
a. Displacement
b. Speed
c. Power
d. Distance
32. Vector quantity is:
a. Displacement
b. Speed
c. Power
d. Distance
33. The quantities which do not require direction for their description are called:
a. Vectors
b. Scalars
c. Both
d. None
34. To differentiate vectors from scalars, we usually use:
a. Light characters
b. Bold characters
c. Both
d. None
35. Graphically the direction of a vector quantity is represented by
a. Straight line
b. Arrow
c. Arrow head
d. All
36. By dividing displacement of a moving body with time, we obtain:
a. Deceleration
b. Acceleration
c. Velocity
d. Speed
37. A ball is thrown vertically upward. Its velocity at the highest point will be:
a. Zero
b. -10ms-1
c. 100ms-1
d. 10ms-1
38. A change in position is called:
a. Displacement
b. Speed
c. Distance
d. Velocity
39. A train is moving at a speed of 36kmh-1 . Its speed expressed in ms-1 is:
a. 20ms-1
b. 5ms-1
c. 25ms-1
d. 10ms-1
40. A car, starts from rest and attain a velocity of 20ms-1 in 8 seconds, the acceleration of car will be:
a. 2.5ms-2
b. 1.5ms-2
c. 3.0m-2
d. 2.0ms-2
41. A sprinter completes its 100 metre race in 12s, its average speed will be:
a. 8ms-1
b. 100ms-1
c. 8.33ms-1
d. 12ms-1
42. Unit of velocity is:
a. Second
b. Meter per square
c. Meter
d. Meter per Second
43. Speed of falcon is:
a. 300kmh-1
b. 150kmh-1
c. 200kmh-1
d. 250kmh-1
44. Acceleration is equal to:
a. vfw-vi2/2
b. vf-vit
c. vfw+vi2/2
d. vf+vit
45. The speed of cheetah is:
a. 100 kmh-1
b. 200 kmh-1
c. 90 kmh-1
d. 70 kmh-1
46. Distance is a ……… quantity:
a. Physical
b. Scalar
c. Vector
d. None
47. Displacement is a ……… quantity:
a. Physical
b. Scalar
c. Vector
d. None
48. The SI unit of speed is:
a. ms2
b. ms-1
c. ms
d. ms-2
49. The formula of speed is:
a. d=vt
b. S=vt
c. S=v2t
d. d=v2t
50. The formula of velocity is:
a. d=vt
b. S=v2t
c. S=vt
d. d=v2t
51. The SI unit of velocity is:
a. ms2
b. ms-1
c. ms
d. ms-2
52. The SI unit of acceleration is:
a. ms2
b. ms-1
c. ms
d. ms-2
53. The velocity of paratrooper is:
a. Terminal
b. Initial
c. Zero
d. Final
54. If a body covers equal distances in equal intervals of time then it will have:
a. Uniform acceleration
b. Uniform velocity
c. Variable speed
d. Uniform speed
55. The types of acceleration are:
a. Four
b. Two
c. Five
d. Three
56. The position is described with respect to some ………:
a. Side
b. Reference point
c. Place
d. Location
57. The shortest distance between two points is called:
a. Length
b. Distance
c. Shortest distance
d. Displacement
58. If the velocity of the body increases with time it is called:
a. Uniform acceleration
b. Positive acceleration
c. Variable acceleration
d. Negative acceleration
59. If the velocity of the body decreases with time it is called:
a. Uniform acceleration
b. Positive acceleration
c. Variable acceleration
d. Negative acceleration
60. The direction of positive acceleration is ……… of the motion of the body:
a. Parallel to the direction
b. Opposite to the direction
c. Vertical to the direction
d. Same to the direction
61. The direction of negative acceleration is ……… of the motion of the body:
a. Parallel to the direction
b. Opposite to the direction
c. Vertical to the direction
d. Same to the direction
62. If an object is moving with constant speed then its distance time graph will be a straight line:
a. Parallel to time axis
b. Along time axis
c. Inclined to time axis
d. Along distance axis
63. A straight line parallel to time axis on a distance time graph tells that the object is:
a. Moving with variable speed
b. Moving with constant speed
c. In motion
d. At rest
64. If an object is moving with constant speed, then its distance-time graph will be a straight line:
a. Parallel to a time axis
b. Along a time axis
c. Inclined to a time axis
d. Along a distance axis
65. The area under the speed-time graph represents:
a. Time
b. Distance
c. Velocity
d. Speed
66. Convert 54 kmh-1 into ms-1
a. 15 ms-1
b. 5 ms-1
c. 20 ms-1
d. 10 ms-1
67. Complete the equation: vf2 – vi2 = ………
a. 2aS
b. S
c. t
d. Vav
68. Complete the equation: vf = ………
a. vi + at
b. vi – at
c. S / a
d. vi + 1/2at2
69. Third equation of motion is:
a. vf2 – vi2 = 2aS
b. S = vt
c. F = ma
d. vf = vi + at
70. Equations of motion are:
a. Four
b. Two
c. Five
d. Three
71. One meter per second is equal to:
a. 6.3 kmh-1
b. 3.6 kmh-1
c. 1/6.3 kmh-1
d. 1/3.6 kmh-1
72. The acceleration of a body falling down freely is approximately:
a. 10 ms-1
b. 10 m2 s-2
c. 10 m2 s-1
d. 10 ms-2
73. Gravitational acceleration is represented by:
a. i
b. g
c. h
d. G
74. The first scientist to introduce gravitational acceleration was:
a. Pascal
b. Newton
c. Coulomb
d. Galileo
75. value of gravitational acceleration is positive when body is moving vertically ………:
a. in a straight line
b. Upward
c. Inclined
d. Downward
76. Value of gravitational acceleration is negative when body is moving vertically ………:
a. In a straight line
b. Upward
c. inclined
d. Downward
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