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

Two sources of sound are said to be coherent if

Question # 2

The principle of superposition states that

Question # 3

When sound waves travel from air to water which of these remains constant?

Question # 4

If F=0.04 N and X=4 cm then K=

Question # 5

The velocity of sound is greatest in

Question # 6

Which of the following changes at an antinode in a stationary wave?

Question # 7

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

If the length of a simple pendulum is 0.25 m its time period would be

Question # 12

Of the following, the option ______ reminds of longitudinal waves.

Question # 13

The expression for restoring force is

Question # 14

The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called

Question # 15

Smaller the damping, the resonance will be

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Fidelity refers to
A. Reproduction of original sound
B. Reproduction of original image
C. Reproduction of music
D. Reproduction of a CD from original copy
2 The vibratory or oscillatory motion of a body is
A. translatory motion
B. back and forth motion about its mean position
C. free all motion
D. circular motion
3 When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be
A. F= Kx0
B. F=1/2Kx0
C. F=2Kx0
D. F=4Kx0
4 Which of the following is the longitudinal waves?
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
5 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
6 The force which opposes the applied force producing the displacement in the spring is called
A. restoring force
B. periodic force
C. centripetal force
D. resistive force
7 SI unit of wave length is:
A. Kilometer
B. Metre
C. Centimetre
D. Hertz
8 The number of vibrating body at any instant from its equilibrium position is called
A. displacement
B. frequency
C. amplitude
D. time period
9 Waves transport energy
A. without transport energy
B. with matter
C. both of them
D. none of them
10 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob

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