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Online Tests
ECAT Physics Chapter 7 Oscillations Online Test MCQs With Answers
Question # 1
If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:
Choose an answer
250 N m
-1
25 N m
-1
2.5 N m
-1
None of these
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Question # 2
To and fro motion of a body is about its mean position is known as:
Choose an answer
Translatory motion
Vibratory motion
Rotatory motion
None of these
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Question # 3
In SHM, the acceleration is ______ when velocity is _____:
Choose an answer
Zero, smallest
Smallest, zero
Zero, zero
Zero, greatest
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Question # 4
If mass of 10 gm is suspended from a spring of K=0.8 Nm
-1
then the extension will be:
Choose an answer
10 cm
1 m
10 mn
None of these
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Question # 5
The restoring force is always directed towards:
Choose an answer
Rest position
Equilibrium position
Mean position
All of them
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Question # 6
When quarter of a circle is completed, the phase of vibration is:
Choose an answer
90
°
180
°
45
°
360
°
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Question # 7
Which one of the following is an example of SHM:
Choose an answer
Motion in a plane
Motion in a swing
Motion in a car
None of these
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Question # 8
When a body is vibrating, the displacement from mean position
Choose an answer
Increases with time
Decreases with time
Changes with time
None of these
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Question # 9
To and from motion of a body about its mean position is known as:
Choose an answer
Translatory motion
Vibratory motion
Rotatory motion
None of these
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Question # 10
Hertz is unit of:
Choose an answer
Time period
Displacement
Amplitude
Frequency
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Question # 11
The string of a simple pendulum should be:
Choose an answer
Heavy
Extensible
In-extensible
None of these
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Question # 12
If there identical strings each of constant K are hooked together the spring constant of resultant spring will be:
Choose an answer
3 K
2 K
K/4
K/3
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Question # 13
A body with frequency would complete one vibration in:
Choose an answer
f seconds
1/f seconds
1 second
f
2
second
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Question # 14
The SI unit of spring constant is identical with that of
Choose an answer
Force
Surface tension
Pressure
Loudness
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Question # 15
Distance covered during one vibration of an oscillating body in terms of amplitude A is:
Choose an answer
A
2 A
3 A
4 A
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Question # 16
The wave form of SHM is
Choose an answer
Pulsed wave
Square wave
Triangular waved
Sine wave
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