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

Fidelity refers to

Question # 2

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:

Question # 3

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 # 4

A body is executing free vibrations when it oscilates

Question # 5

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

Question # 6

The phase determines the

Question # 7

When a mass 'm' is pulled slowly, the spring stretches by an amount x0,then the average force would be

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Decibel is unit of

Question # 12

The principle of superposition states that

Question # 13

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

Question # 14

Fluids can transmit:

Question # 15

The total energy of spring mass system is

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The damping depends upon the
A. amplitude
B. sharpness
C. both of them
D. none of them
2 The bob of a simple pendulum is suspended by
A. string
B. heavy inextensible string
C. light extensible string
D. light inextensible string
3 If the amplitude of sound is doubled and the frequency reduced to one-fourth, the intensity of sound at the same point will be
A. Increasing by a factor of 2
B. Decreasing by a factor of 2
C. Decreasing by a factor of 4
D. Unchanged
4 A wave, which transfer energy by moving away from the source of disturbance is called a
A. progressive wave
B. travelling wave
C. both of them
D. none of them
5 What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?
A. 1 MHz
B. 10 Hz
C. 1 GHz
D. 100000 Hz
6 When an oscillatory motion repeats itself, then this type of motion is called
A. vibratory motion
B. constant motion
C. fixed motion
D. periodic motion
7 If the displacement of a body executing S.H.M is plotted against time, then the curve is known as
A. frequency of S.H.M
B. period of S.H.M
C. wave form
D. none of them
8 Which one of the following could be the frequency of ultraviolet radiation?
A. 1.0 x 106Hz
B. 1.0 x 109Hz
C. 1.0 x 1012Hz
D. 1.0 x 1015Hz
9 If the external driving force is periodic with a period compareable to the natural period of the oscillator, then we get
A. diffraction
B. beat
C. interference
D. resonance
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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