Waves and Sound AFCAT Questions

AFCAT Physics

Waves and Sound MCQ Questions


13.
In SHM, the velocity is maximum when:
A.
Phase is Ī€/2
B.
Displacement is maximum
C.
Displacement is zero
D.
Acceleration is maximum
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ANSWER :
C. Displacement is zero
14.
What is the phase difference between displacement and velocity in SHM?
A.
0
B.
2Ī€
C.
Ī€
D.
Ī€/2
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ANSWER :
D. Ī€/2
15.
What is the phase difference between displacement and acceleration in SHM?
A.
Ī€
B.
Ī€/2
C.
Ī€/4
D.
0
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ANSWER :
A. Ī€
16.
The force constant k in SHM is related to mass m and angular frequency Ī‰ by:
A.
k = Ī‰Â˛/m
B.
k = mĪ‰Â˛
C.
k = mĪ‰
D.
k = m/Ī‰Â˛
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ANSWER :
B. k = mĪ‰Â˛
17.
The time period of a particle of mass m oscillating with force constant k is:
A.
T = 2Ī€âˆš(k/m)
B.
T = 2Ī€(m/k)
C.
T = √(m/k)/2Ī€
D.
T = 2Ī€âˆš(m/k)
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ANSWER :
D. T = 2Ī€âˆš(m/k)
18.
In SHM, the kinetic energy is maximum at:
A.
Extreme position
B.
Half amplitude position
C.
Mean position
D.
Quarter amplitude position
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ANSWER :
C. Mean position