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

Velocity of sound in vacuum (in m/s) is

Question # 2

The loudness and pitch of a sound note depends on

Question # 3

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

Question # 4

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

Question # 5

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?

Question # 6

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

Question # 7

The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:

Question # 8

SI unit of wave length is:

Question # 9

The speed of sound in a medium depends on

Question # 10

The weight 'mg' of the bob is resolved into

Question # 11

In case of mechanical waves, we study the motion of

Question # 12

The force which opposes the applied force producing the displacement in the spring is called

Question # 13

A swing has

Question # 14

Which one of the following is an example of resonance

Question # 15

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

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
A. e.m. waves
B. mechanical waves
C. sound waves
D. water waves
2 The velocity of sound at same temperature is maximum in
A. H2
B. N2
C. O2
D. NH3
3 If the length of second pendulum becomes four times then its time period will become
A. Four time
B. Two times
C. Six times
D. Eight times
4 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
5 A swing has
A. one natural frequency
B. two natural frequencies
C. three natural frequencies
D. four natural frequencies
6 The time required to complete on vibration is called
A. frequency
B. total time
C. time period
D. velocity
7 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
8 The wave form of S.H.M will be
A. square wave
B. sine wave
C. rectified wave
D. saw-tooth wave
9 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
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
10 The speed of sound in a medium depends on
A. The elastic property but not on the inertia property
B. The inertia property but not on the elastic property
C. The elastic property as well as the inertia property
D. Neither the elastic property nor the inertia property

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