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Chapter 8 - Waves - 2
1.
The velocity of longitudinal waves in fluid is:-
a) V =
Ö
r
/ E
b) V =
Ö
E /
r
c) V =
r
/ E
d) V = E /
r
2.
The discrepancy in the theoretical and experimental values of velocity of sound was corrected by:-
a) Newton
b) Laplace
c) Huygen
d) Faraday
3.
The relation for the velocity of sound in gas is:-
a) V =
Ö
Υ P /
r
b) None of these
c) V = Υ P /
r
d) V =
r
P / Υ
4.
The speed of sound is independent of:-
a) Medium
b) source producing sound
c) Temperature
d) Pressure
5.
The velocity of sound is maximum in:-
a) Air
b) Metal
c) Glass
d) Nitrogen
6.
Two waves can interfere only if they have:-
a) Propating in opposite direction
b) Different frequencies
c) Phase coherence
d) Same velocity
7.
The periodic alterations of sound between maximum and minimum loudness are called:-
a) None of these
b) Beats
c) Constructive Interference
d) Diffraction
8.
Beats can be heared when difference of frequency is not more than:-
a) 10
b) 8
c) 4
d) 6
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