Oscillation and Waves UPSC Questions

Physics

Oscillation and Waves MCQ Questions


7.
Match the following
List I List II
a) Amplitude 1.) Maximum displacement on either side
b) Frequency 2.) 1/time period
c) Wave form 3.) Presence of other frequencies
d) Loudness 4.) Amplitude
A.
a-1,b-2,c-3,d-4
B.
a-3,b-4,c-2,d-1
C.
a-4,b-3,c-2,d-1
D.
a-2,b-3,c-4,d-1
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ANSWER :
A. a-1,b-2,c-3,d-4
8.
The number of oscillations per unit time is known as
A.
Frequency
B.
Amplitude
C.
Wavelength
D.
Time period
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ANSWER :
A. Frequency
9.
The simple harmonic motion is represented by x = A cos(ωt + φ), then 'ω' is
A.
Phase constant
B.
Displacement
C.
Angular frequency
D.
Amplitude
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ANSWER :
C. Angular frequency
10.
What is the length of a simple pendulum, which ticks seconds ?
A.
1 m
B.
2 m
C.
3 m
D.
4 m
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ANSWER :
A. 1 m
11.
If T is the time period of an oscillating pendulum, which one of the following statements is/are correct ? (i) The motion repeats after time T only once (ii) T is the least time after which motion repeats itself (iii) The motion repeats itself after nT, where n is a positive integer (iv) T remains the same only for small angular displacements
A.
(i), (ii) and (iii) only
B.
(ii), (iii) and (iv) only
C.
(i), (iii) and (iv) only
D.
All the above
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ANSWER :
B. (ii), (iii) and (iv) only
12.
In mechanical oscillation of a body oscillates about its mean position which is also its _____
A.
Force
B.
Motion
C.
Watt
D.
Equilibrium position
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ANSWER :
D. Equilibrium position