ECAT Pre General Science Physics Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 8 Waves

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ECAT Pre General Science Physics Chapter 8 Waves

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Question # 1

If the displacement of a body executing S.H.M is plotted against time, then the curve is known as

Question # 2

The waves produced in a microwave oven have frequency

Question # 3

transverse wave motion is possible in:

Question # 4

The maximum displacement of a body on either side of its equilibrium position is called

Question # 5

The velocity of sound is greatest in

Question # 6

Time period of simple pendulum is independent of

Question # 7

The characteristic of a body executing S.H.M is that its acceleration is

Question # 8

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

Question # 9

The waves in which the particles of the medium have displacement along the direction of propagation of waves are called

Question # 10

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 11

The process in which energy is dissipated from the oscillating system is known as

Question # 12

As the bob of the pendulum moves to and fro which of the force is experienced by the bob

Question # 13

If we increase the length of a simple pendulum four times, its time period will become

Question # 14

In a resonance situation the amplitude of the motion may become extra ordinarily large, if

Question # 15

When a mass 'm' is pulled slowly, the spring stretches by an amount xo, then the work done will be

Question # 16

The vibrations of factory floor caused by the running of heavy machinery is an example of

Question # 17

Si units of time period is

Question # 18

The total energy of spring mass system is

Question # 19

When two waves with same frequency and constant phase difference phase difference interfere

Question # 20

The natural frequency of a pendulum which is vibrating freely, depends upon its

Question # 21

Laplace formula is derived from

Question # 22

Which one of the following wave motions is transverse:

Question # 23

Acceleration of the mass at any instant is given by

Question # 24

SI unit of frequency is

Question # 25

The waves which propagate through the oscillations of material particles are known as:

Question # 26

When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to

Question # 27

The vibratory or oscillatory motion of a body is

Question # 28

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 29

The phase determines the

Question # 30

Energy is not carried by

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
2 When temperature increase, the frequency of a tuning fork
A. Increases
B. Decreases
C. Remains same
D. Increase or decreases depending on the material
3 The waves which propagate through the oscillations of material particles are known as:
A. Mechanical waves
B. Electromagnetic waves
C. Any of them
D. None of them
4 Which one of the following elasticizes is possessed by fluids:
A. Young's elastic modulus (length)
B. Bulk elastic modulus (volume)
C. Modulus of rigidity (shape)
D. None of these
5 The example of mechanical wave is
A. waves in ropes
B. waves on water surface
C. waves in air
D. all of them
6 If a simple pendulum is shifted from karachi to K-2 cliff, its time period
A. remains the same
B. decreases
C. increases
D. none of them
7 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal
8 If the mass of the simple pendulum becomes double, its time period
A. increase
B. decreases
C. remains constant
D. none of them
9 Acceleration of the mass at any instant is given by
A. a=k/m x
B. a= - m/k x
C. a = - k/m x
D. a=m/k x
10 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string

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