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

The expression for restoring force is

Question # 2

Two sources of sound are said to be coherent if

Question # 3

Longitudinal waves are also called:

Question # 4

If the length of second pendulum becomes four times then its time period will become

Question # 5

The temperature at which the speed of sound becomes double as was at 27°C is

Question # 6

When two progressive waves of nearly same frequencies superimpose and give rise to beats, then

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Associated with the motion of a driven harmonic oscillator, there is a very striking phenomenon, know as

Question # 11

The velocity of sound is greatest in

Question # 12

The velocity of sound in air not effected by changes in

Question # 13

The restoring force always directed towards the

Question # 14

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 Of the following, the option ______ reminds of longitudinal waves.
A. Sound waves
B. Heat waves
C. Electromagnetic waves
D. Light waves
2 A physical system under going forced vibrations is known as
A. Simple harmonic oscillator
B. Compound harmonic oscillator
C. Physical harmonic oscillator
D. driven harmonic oscillator
3 With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are
A. Energy, momentum and mass
B. Energy
C. Energy and mass
D. Energy and linear momentum
4 A simple pendulum consists of a
A. small light bob
B. small heavy bob
C. big light bob
D. big heavy bob
5 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
6 Time period of simple pendulum is independent of
A. length
B. mass
C. acceleration due to gravity
D. none of them
7 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
8 The expression for restoring force is
A. F=ma
B. F=kx
C. F= -kx
D. Kx=ma
9 Progressive waves of frequency 300 Hz are superimposed in produced a system of stationary waves in which adjacent nodes are 1.5 m apart. What is the speed of the progressive waves?
A. 100 ms-1
B. 200 ms-1
C. 450 ms-1
D. 900 ms-1
10 The resonance will be sharp, if the amplitude decreases rapidly at a frequency
A. equal to the resonant frequency
B. slight different from the resonant frequency
C. greatly different from the resonant frequency
D. any one of them

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