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

Sound waves in air always

Question # 2

SI unit of wave length is:

Question # 3

Two sources of sound are said to be coherent if

Question # 4

The expression of Hook's law is

Question # 5

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

Question # 6

While describing the motion of a simple pendulum, the frictional effects are

Question # 7

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

Question # 8

What is frequency of radio waves transmitted by a station, if the wavelength of those waves is 300 m?

Question # 9

Si units of time period is

Question # 10

If two waves of length 50 cm and 51 cm produced 12 beats per second, the velocity of sound is

Question # 11

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

Question # 12

Data transmitted along glass-fiber cables is in the form of pulses of monochromatic red light each of duration 2.5 ns. Which of the following is the best estimate of the number of wavelength in each pulse?

Question # 13

Which of the following does not exhibit S.H.M?

Question # 14

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

Question # 15

The loudness and pitch of a sound note depends on

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ECAT Physics Chapter 8 Important MCQ's

Sr.# Question Answer
1 transverse wave motion is possible in:
A. Air
B. A mixture of NH3and O2
C. Strings
D. All of these
2 Example of progressive wave is
A. transverse waves
B. longitudinal waves
C. both of them
D. none of them
3 Si units of time period is
A. second
B. hertz
C. revolution
D. vibration/sec
4 For transmission of both transverse and longitudinal waves, we can use:
A. Solid
B. Gas
C. Plasma
D. None of these
5 Which of the following changes at an antinode in a stationary wave?
A. Density only
B. Pressure only
C. Both pressure and density
D. Neither pressure nor density
6 The waves which propagate out in the space due to oscillations of electric and magnetic fields are called:
A. Mechanical waves
B. Electromagnetic waves
C. Matter waves
D. All of them
7 Which of the following medium/media can transmit both transverse and longitudinal waves:
A. Solids
B. Liquids
C. Gases
D. All of them
8 When a body moves to and fro motion, this type of motion is called
A. translatory motion
B. circular motion
C. oscillatory motion
D. all of them
9 In the production of beats by 2 waves of same amplitude and nearly same frequency, the maximum intensity to each of the constituent waves is
A. Same
B. 2 times
C. 4 times
D. 8 times
10 At 'resonance' the transfer of energy from deriving source to the oscillator is
A. maximum
B. minimum
C. zero
D. none of them

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