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ECAT Physics Chapter 8 Waves Online Test MCQs With Answers
Question # 1
In transverse waves, the individual particles of the medium move:
Choose an answer
In circles
Perpendicular to the direction of level
Parallel to the direction of level
None of these
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Question # 2
If the length of a simple pendulum is 0.25 m its time period would be
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1.0 s
2.0 s
3.0 s
4.0 s
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Question # 3
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?
Choose an answer
10
3
10
6
10
9
10
12
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Question # 4
The waves which propagate out in space due to oscillation of electric and magnetic fields are known as
Choose an answer
e.m. waves
mechanical waves
sound waves
water waves
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Question # 5
The velocity of sound in air depends upon
Choose an answer
Density and elasticity of gas
Pressure
Wavelength
Amplitude and frequency of sound
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Question # 6
Example of vibratory motion is
Choose an answer
mass suspended from a spring
a bob of simple pendulum
mass attached to a spring placed
all of them
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Question # 7
Waves transport energy
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without transport energy
with matter
both of them
none of them
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Question # 8
The time required to complete on vibration is called
Choose an answer
frequency
total time
time period
velocity
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Question # 9
The waves produced in a microwave oven have wavelength.
Choose an answer
12 mm
12 cm
12 m
12 mm
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Question # 10
Through which character we can distinguish the light waves from sound waves
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Interference
Refraction
Polarization
Reflection
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Question # 11
If the length of second pendulum becomes four times then its time period will become
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Four time
Two times
Six times
Eight times
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Question # 12
The wave form of S.H.M will be
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square wave
sine wave
rectified wave
saw-tooth wave
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Question # 13
The vibrations of factory floor caused by the running of heavy machinery is an example of
Choose an answer
free vibration
natural vibrations
forced vibrations
all of them
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Question # 14
The damping depends upon the
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amplitude
sharpness
both of them
none of them
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Question # 15
Which type of wave can be set up in solids
Choose an answer
longitudinal waves
transverse waves
both of them
none of them
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Question # 16
The resonance will be sharp, if the amplitude decreases rapidly at a frequency
Choose an answer
equal to the resonant frequency
slight different from the resonant frequency
greatly different from the resonant frequency
any one of them
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