ECAT Pre Computer Science Chapter 8 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 8 Waves

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

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ECAT Physics Chapter 8 Waves

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Question # 1

When a body is performing S.H.M., its acceleration is

Question # 2

The bob of a simple pendulum is suspended by

Question # 3

transverse wave motion is possible in:

Question # 4

SI unit of frequency is

Question # 5

When the bob of simple pendulum is at mean position, its K.E will be

Question # 6

Crests and troughs are formed in:

Question # 7

The waves which propagate by the collision of material particles are known as

Question # 8

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

Question # 9

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

Question # 10

A stationary sound wave has frequency 165 Hz (speed of sound in air = 330 m/s) then distance between two consecutive nodes is

Question # 11

Which of the following is/are example/s if mechanical waves i.e. waves generated in _______:

Question # 12

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

Question # 13

Resonance occurs when one of the natural frequencies of vibration of the forced or driven harmonic oscillator

Question # 14

At 'resonance' the transfer of energy from deriving source to the oscillator is

Question # 15

If one end of a rubber cord is fixed with a support and the other end is wiggled by hand, the waves generated on the card are:

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The time period of pendulums of different lengths would be
A. same
B. different
C. both of them
D. none 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 A heavily damped system has a fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
4 If F=0.04 N and X=4 cm then K=
A. 1 Nm-1
B. 2 Nm-1
C. 3 Nm-1
D. 4 Nm-1
5 When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:
A. Longitudinal waves
B. Transverse waves
C. Water waves
D. Complex waves
6 Which one of the following wave motions is transverse:
A. Wave motion produced in water when a piece of stone is thrown into it
B. Pulling of weight hanging vertically with a spiral spring
C. Both of these
D. None of these
7 The waves produced in a microwave oven have wavelength.
A. 12 mm
B. 12 cm
C. 12 m
D. 12 mm
8 The loudness and pitch of a sound note depends on
A. Intensity and velocity
B. Frequency and velocity
C. Intensity and frequency
D. Frequency and number of harmonic
9 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
10 Mechanical waves on the surface of a liquid are
A. Transverse
B. Longitudinal
C. Torsional
D. both transverse and longitudinal

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