1. The motion which repeats itself at regular intervals of time is called
A) Periodic motion
B) Linear motion
C) Circular motion
D) Rotational motion
Answer: A) Periodic motion
Explanation: Periodic motion repeats in equal time intervals, such as pendulum motion.
2. A motion in which the restoring force is directly proportional to displacement is called
A) Simple harmonic motion
B) Non-uniform motion
C) Uniform motion
D) Irregular motion
Answer: A) Simple harmonic motion
Explanation: In SHM, restoring force always acts toward the mean position.
3. Example of simple harmonic motion is
A) Vibration of a tuning fork
B) Rotation of a wheel
C) Motion of a train
D) Falling of a ball
Answer: A) Vibration of a tuning fork
4. The to-and-fro motion of a pendulum is an example of
A) Simple harmonic motion
B) Uniform motion
C) Linear motion
D) Random motion
Answer: A) Simple harmonic motion
5. The point at which the body is in equilibrium in SHM is called
A) Mean position
B) Extreme position
C) Rest position
D) Neutral position
Answer: A) Mean position
6. The maximum displacement from the mean position is called
A) Amplitude
B) Frequency
C) Time period
D) Speed
Answer: A) Amplitude
7. The time taken to complete one oscillation is called
A) Time period
B) Frequency
C) Amplitude
D) Speed
Answer: A) Time period
8. The number of oscillations per second is called
A) Frequency
B) Time period
C) Velocity
D) Amplitude
Answer: A) Frequency
9. The unit of frequency is
A) Hertz
B) Joule
C) Newton
D) Second
Answer: A) Hertz
10. The unit of time period is
A) Second
B) Minute
C) Hour
D) Hertz
Answer: A) Second
11. The direction of restoring force in SHM is always
A) Toward mean position
B) Away from mean position
C) Perpendicular to motion
D) Constant
Answer: A) Toward mean position
12. At the extreme position of SHM, the velocity of the body is
A) Zero
B) Maximum
C) Constant
D) Equal to acceleration
Answer: A) Zero
13. At the mean position, the acceleration of the body is
A) Zero
B) Maximum
C) Constant
D) Negative
Answer: A) Zero
14. The acceleration in SHM is always directed
A) Toward mean position
B) Away from mean position
C) Tangentially
D) Downward
Answer: A) Toward mean position
15. The velocity of a body performing SHM is maximum at
A) Mean position
B) Extreme position
C) Midway
D) End position
Answer: A) Mean position
16. The acceleration of a particle in SHM is maximum at
A) Extreme position
B) Mean position
C) Middle
D) None
Answer: A) Extreme position
17. The graph between displacement and time in SHM is a
A) Sine or cosine curve
B) Straight line
C) Parabola
D) Circle
Answer: A) Sine or cosine curve
18. The phase of SHM tells us about
A) Position and direction of motion
B) Speed only
C) Energy only
D) Frequency only
Answer: A) Position and direction of motion
19. The frequency and time period are
A) Inversely related
B) Directly related
C) Equal
D) Independent
Answer: A) Inversely related
20. In SHM, total energy is
A) Constant
B) Increasing
C) Decreasing
D) Zero
Answer: A) Constant
Explanation: Energy oscillates between potential and kinetic but total remains constant.
21. The potential energy in SHM is maximum at
A) Extreme position
B) Mean position
C) Middle
D) Always zero
Answer: A) Extreme position
22. The kinetic energy in SHM is maximum at
A) Mean position
B) Extreme position
C) Halfway
D) Zero point
Answer: A) Mean position
23. The total mechanical energy of a simple harmonic oscillator depends on
A) Amplitude
B) Frequency
C) Velocity
D) Acceleration
Answer: A) Amplitude
24. Simple harmonic motion is
A) Periodic and oscillatory
B) Non-periodic
C) Uniform
D) Random
Answer: A) Periodic and oscillatory
25. The motion of a swing is an example of
A) Simple harmonic motion
B) Circular motion
C) Rotatory motion
D) Translatory motion
Answer: A) Simple harmonic motion
26. The pendulum clock works on the principle of
A) Simple harmonic motion
B) Uniform motion
C) Linear motion
D) Periodic acceleration
Answer: A) Simple harmonic motion
27. The time period of a pendulum depends on
A) Length of pendulum
B) Mass of bob
C) Amplitude of swing
D) Air pressure
Answer: A) Length of pendulum
28. The time period of a pendulum is independent of
A) Mass of bob
B) Length of pendulum
C) Gravity
D) Motion
Answer: A) Mass of bob
29. The restoring force in SHM acts
A) In the opposite direction to displacement
B) In the same direction
C) At right angle
D) None
Answer: A) In the opposite direction to displacement
30. The motion of a tuning fork is an example of
A) SHM
B) Rotational motion
C) Irregular motion
D) Uniform motion
Answer: A) SHM
31. A motion which repeats after equal intervals of time is called
A) Periodic motion
B) Irregular motion
C) Random motion
D) Circular motion
Answer: A) Periodic motion
32. The amplitude in SHM depends on
A) Initial displacement
B) Mass
C) Frequency
D) Time
Answer: A) Initial displacement
33. The velocity in SHM is zero at
A) Extreme position
B) Mean position
C) Halfway
D) Nowhere
Answer: A) Extreme position
34. The acceleration is zero at
A) Mean position
B) Extreme position
C) Middle
D) Everywhere
Answer: A) Mean position
35. The displacement of SHM varies with
A) Sine or cosine law
B) Constant rate
C) Square of time
D) Exponential law
Answer: A) Sine or cosine law
36. In SHM, when amplitude is doubled, energy becomes
A) Four times
B) Half
C) Double
D) Same
Answer: A) Four times
Explanation: Energy depends on square of amplitude.
37. The motion of an atom in a crystal lattice is
A) SHM
B) Random motion
C) Linear
D) Circular
Answer: A) SHM
38. In SHM, displacement is maximum at
A) Extreme position
B) Mean position
C) Midway
D) Everywhere
Answer: A) Extreme position
39. The motion of air particles in a sound wave is
A) SHM
B) Circular
C) Rotatory
D) Random
Answer: A) SHM
40. The time taken to complete one vibration is
A) Period
B) Frequency
C) Amplitude
D) Speed
Answer: A) Period
41. The oscillation of a spring-mass system is an example of
A) Simple harmonic motion
B) Random motion
C) Circular motion
D) Irregular motion
Answer: A) Simple harmonic motion
Explanation: In a spring system, restoring force always acts toward the mean position.
42. The number of vibrations completed per unit time is called
A) Frequency
B) Period
C) Velocity
D) Energy
Answer: A) Frequency
43. The total energy in SHM is the sum of
A) Kinetic and potential energy
B) Heat and pressure
C) Velocity and momentum
D) Force and acceleration
Answer: A) Kinetic and potential energy
44. At the mean position, the total energy of the particle is
A) Entirely kinetic
B) Entirely potential
C) Zero
D) Constant
Answer: A) Entirely kinetic
45. At the extreme position, the total energy is
A) Entirely potential
B) Entirely kinetic
C) Constant
D) Zero
Answer: A) Entirely potential
46. The exchange between potential and kinetic energy during oscillation is
A) Continuous
B) Occasional
C) Instantaneous only at midpoint
D) Random
Answer: A) Continuous
47. The phase difference between velocity and displacement in SHM is
A) One-fourth of a cycle
B) One-half of a cycle
C) Zero
D) Full cycle
Answer: A) One-fourth of a cycle
Explanation: Velocity leads displacement by one-fourth cycle.
48. In SHM, velocity and acceleration are
A) Not in phase
B) Always in phase
C) Independent
D) Zero
Answer: A) Not in phase
49. The potential energy in SHM is zero at
A) Mean position
B) Extreme position
C) Midway
D) None
Answer: A) Mean position
50. The kinetic energy in SHM is zero at
A) Extreme position
B) Mean position
C) Halfway
D) Everywhere
Answer: A) Extreme position
51. The time period of a pendulum depends upon
A) Length and gravity
B) Amplitude
C) Mass of bob
D) Material of string
Answer: A) Length and gravity
52. The period of oscillation increases when
A) Length increases
B) Mass increases
C) Amplitude increases
D) Air resistance decreases
Answer: A) Length increases
53. The period of oscillation decreases when
A) Gravity increases
B) Length increases
C) Mass increases
D) Amplitude decreases
Answer: A) Gravity increases
54. The motion of a loaded spring is
A) Simple harmonic
B) Irregular
C) Uniform
D) Accelerated
Answer: A) Simple harmonic
55. The pendulum shows simple harmonic motion only for
A) Small angles of swing
B) Large angles
C) Any angle
D) When air is removed
Answer: A) Small angles of swing
Explanation: For small angles, restoring force is proportional to displacement.
56. The oscillation that gradually decreases with time is called
A) Damped oscillation
B) Forced oscillation
C) Free oscillation
D) Resonance
Answer: A) Damped oscillation
57. The oscillation that continues with constant amplitude is called
A) Free oscillation
B) Damped oscillation
C) Forced oscillation
D) Resonance
Answer: A) Free oscillation
58. The oscillation maintained by an external periodic force is called
A) Forced oscillation
B) Free oscillation
C) Damped oscillation
D) Resonant motion
Answer: A) Forced oscillation
59. The phenomenon in which a body vibrates with maximum amplitude when frequency of external force equals natural frequency is called
A) Resonance
B) Damping
C) Echo
D) Beats
Answer: A) Resonance
60. Example of resonance is
A) Breaking of glass by a singer’s voice
B) Running motion
C) Linear motion
D) Heat flow
Answer: A) Breaking of glass by a singer’s voice
61. A pendulum clock becomes slow in summer because
A) Length of pendulum increases
B) Length decreases
C) Gravity increases
D) Amplitude changes
Answer: A) Length of pendulum increases
62. A pendulum clock becomes fast in winter because
A) Length of pendulum decreases
B) Length increases
C) Gravity decreases
D) Amplitude changes
Answer: A) Length of pendulum decreases
63. The energy of a simple harmonic oscillator is
A) Constant
B) Decreasing
C) Increasing
D) Variable
Answer: A) Constant
64. The total mechanical energy of a pendulum is maximum at
A) Every point
B) Mean position
C) Extreme position
D) Center
Answer: A) Every point
Explanation: Energy remains constant throughout oscillation.
65. When a pendulum is displaced and released, it performs
A) Simple harmonic motion
B) Linear motion
C) Uniform motion
D) Rotational motion
Answer: A) Simple harmonic motion
66. The time taken for one complete vibration is called
A) Period
B) Frequency
C) Amplitude
D) Cycle
Answer: A) Period
67. The number of vibrations in one second is called
A) Frequency
B) Amplitude
C) Cycle
D) Period
Answer: A) Frequency
68. If amplitude decreases gradually, the motion is said to be
A) Damped
B) Free
C) Forced
D) Uniform
Answer: A) Damped
69. When a body oscillates under influence of external force, it is
A) Forced vibration
B) Free vibration
C) Damped vibration
D) None
Answer: A) Forced vibration
70. The oscillations of tuning fork in air are
A) Free oscillations
B) Forced oscillations
C) Damped oscillations
D) Resonant oscillations
Answer: C) Damped oscillations
Explanation: Energy is lost due to air resistance.
71. The oscillations of a clock pendulum are
A) Damped
B) Free
C) Forced
D) Random
Answer: C) Forced
Explanation: External mechanism (clockwork) keeps it vibrating.
72. The natural frequency of a system depends on
A) Mass and stiffness
B) Amplitude
C) Temperature
D) Shape
Answer: A) Mass and stiffness
73. Resonance is useful in
A) Radio and TV tuning
B) Heating water
C) Chemical reactions
D) None
Answer: A) Radio and TV tuning
74. Resonance can be harmful because it may
A) Destroy structures
B) Produce heat
C) Increase mass
D) Reduce energy
Answer: A) Destroy structures
Explanation: Bridges or machines can collapse if resonance occurs.
75. The natural frequency of a pendulum depends on
A) Its length and gravity
B) Mass of bob
C) Shape of bob
D) Air pressure
Answer: A) Its length and gravity
76. The SHM of an object can be represented graphically by a
A) Sine curve
B) Straight line
C) Parabola
D) Step curve
Answer: A) Sine curve
77. The total energy of a vibrating particle remains constant if
A) No frictional forces act
B) Damping is present
C) External force acts
D) Energy is lost
Answer: A) No frictional forces act
78. Damping occurs due to
A) Frictional resistance
B) Elasticity
C) Pressure
D) Frequency
Answer: A) Frictional resistance
79. When damping increases gradually, amplitude
A) Decreases
B) Increases
C) Constant
D) Doubles
Answer: A) Decreases
80. When damping is very large, oscillations
A) Stop completely
B) Increase
C) Become uniform
D) Continue forever
Answer: A) Stop completely
81. The force responsible for oscillatory motion is called
A) Restoring force
B) Frictional force
C) Centrifugal force
D) Magnetic force
Answer: A) Restoring force
82. Restoring force acts
A) Toward mean position
B) Away from mean position
C) At right angle
D) Randomly
Answer: A) Toward mean position
83. The time period of an oscillation is independent of
A) Amplitude (for small oscillations)
B) Gravity
C) Length
D) Medium
Answer: A) Amplitude (for small oscillations)
84. The phase of SHM specifies
A) State of motion at a given instant
B) Only velocity
C) Only acceleration
D) Only displacement
Answer: A) State of motion at a given instant
85. The oscillations of air molecules in sound waves are
A) Simple harmonic
B) Random
C) Rotational
D) Irregular
Answer: A) Simple harmonic
86. The vibrations of atoms in a solid crystal are
A) Simple harmonic
B) Random
C) Chaotic
D) Uniform
Answer: A) Simple harmonic
87. The motion of a child on a swing is
A) Simple harmonic
B) Uniform
C) Random
D) Irregular
Answer: A) Simple harmonic
88. The potential energy of a body in SHM is minimum at
A) Mean position
B) Extreme position
C) Middle
D) Top
Answer: A) Mean position
89. The restoring force in SHM is proportional to
A) Displacement
B) Velocity
C) Acceleration
D) Frequency
Answer: A) Displacement
90. The oscillation that continues indefinitely without energy loss is
A) Free oscillation
B) Damped oscillation
C) Forced oscillation
D) Random oscillation
Answer: A) Free oscillation
91. The motion of a spring under gravity is
A) Simple harmonic
B) Linear
C) Rotational
D) Random
Answer: A) Simple harmonic
92. The amplitude of a vibrating body gradually decreases due to
A) Damping
B) Resonance
C) External energy
D) Frequency
Answer: A) Damping
93. When two pendulums of equal lengths are suspended close together, they may
A) Influence each other’s motion
B) Stop vibrating
C) Change shape
D) Break
Answer: A) Influence each other’s motion
Explanation: Energy transfer occurs — called coupled oscillations.
94. Resonance occurs when
A) Driving frequency equals natural frequency
B) Amplitude is maximum
C) Acceleration equals velocity
D) Force equals displacement
Answer: A) Driving frequency equals natural frequency
95. The motion of the needle in a moving-coil galvanometer is
A) Damped SHM
B) Forced SHM
C) Free SHM
D) Random
Answer: A) Damped SHM
96. SHM can be considered as a projection of
A) Uniform circular motion
B) Random motion
C) Linear motion
D) Rotational motion
Answer: A) Uniform circular motion
97. A swing moves slower if
A) Its length is greater
B) Its length is shorter
C) Its amplitude is larger
D) Air resistance decreases
Answer: A) Its length is greater
98. If the pendulum is taken to the moon, its time period
A) Increases
B) Decreases
C) Remains same
D) Becomes zero
Answer: A) Increases
Explanation: Gravity on the moon is weaker, so oscillations slow down.
99. Simple harmonic motion is the basis of
A) Musical sounds
B) Radio waves
C) Magnetism
D) Light reflection
Answer: A) Musical sounds
100. The study of SHM helps in understanding
A) Vibrations, waves, and sound
B) Heat transfer
C) Electricity
D) Light reflection
Answer: A) Vibrations, waves, and sound