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

Which type of wave can be set up in solids

Question # 2

The distance covered by the wave in one second is:

Question # 3

Such oscillations in which the amplitude decreases steadily with time, are called

Question # 4

Fluids can transmit:

Question # 5

Which of the following medium/media can transmit both transverse and longitudinal waves:

Question # 6

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

Question # 7

The number of vibrating body at any instant from its equilibrium position is called

Question # 8

Which one of the following wave motions is transverse:

Question # 9

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

Question # 10

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

Question # 11

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

Question # 12

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

Question # 13

Through which character we can distinguish the light waves from sound waves

Question # 14

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

Question # 15

The restoring force always directed towards the

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 When a mass 'm' is pulled slowly through a distance 'xo' , the elastic potential energy of the spring would be
A. P.E=Kx2o
B. P.E= 1/2kxo
C. P.E=1/2Kx2o
D. P.E=Kx2o
2 A weakly damped system has fairly
A. sharp resonance curve
B. flat resonance curve
C. both of them
D. none of them
3 Sound waves in air always
A. Longitudinal
B. Transverse
C. Stationary
D. Electromagnetic
4 The velocity of sound in air depends upon
A. Density and elasticity of gas
B. Pressure
C. Wavelength
D. Amplitude and frequency of sound
5 The square of 0.4 is:
A. Greater than 0.4
B. Smaller than 0.4
C. Equal to 0.4
D. None of them
6 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
7 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
8 The wave motion set up in any medium depends upon:
A. Elasticity
B. Inertia
C. Density
D. All of these
9 An object undergoes S.H.M has maximum speed when its displacement from the mean position is
A. maximum
B. zero
C. half of the maximum value
D. one third of the maximum value
10 The waves in which the particles of the medium are displaced in a direction perpendicular to the direction of propagation of waves are known as
A. longitudinal waves
B. transverse waves
C. non-mechanical waves
D. none of them

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