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

Longitudinal waves are also called:

Question # 2

SI unit of frequency is

Question # 3

The velocity of sound is greatest in

Question # 4

The ratio of velocity of sound in air at 4 atm pressure and that at 1 atm pressure would be

Question # 5

Wave disturbances may also come in a concentrated bundle, like shock wave from an aeroplane flying at

Question # 6

The distance covered by the wave in one second is:

Question # 7

If the time period a simple pendulum is 2 s, its frequency would be

Question # 8

Which of the following is not mechanical wave?

Question # 9

To hear a clear echo, the reflecting surface must be at a minimum distance of

Question # 10

The expression of Hook's law is

Question # 11

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

Question # 12

The expression for restoring force is

Question # 13

When half of the cycle of a body executing S.H.M is completed, then the phase of the vibration will be

Question # 14

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

Question # 15

The vibrations of factory floor caused by the running of heavy machinery is an example of

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 The phase determines the
A. displacement
B. amplitude
C. frequency
D. state of motion of vibrating body
2 Example of vibratory motion is
A. mass suspended from a spring
B. a bob of simple pendulum
C. mass attached to a spring placed
D. all of them
3 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them
4 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
5 When the bob of simple pendulum is at extreme position, its K.E. will be
A. maximum
B. minimum
C. zero
D. all of them
6 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
7 For transmission of both transverse and longitudinal waves, we can use:
A. Solid
B. Gas
C. Plasma
D. None of these
8 The waves produced in a microwave oven have frequency
A. 2450 Hz
B. 2450 K Hz
C. 2450 M Hz
D. 2450 G Hz
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 Transverse waves can be set up:
A. Solids
B. Liquids
C. Gases
D. All of them

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