A. F/m
should be small
B. M should be small and F should be large
C. W should
be very large compared to w0
D. M should
be large and F should be small
192. An automobile sounding its horn is moving
away from an observer. The pitch of the horn's sound relative to its normal
pitch is?
A. The same
B. Higher or
lower depending upon the exact frequency
C. Lower
D. Higher
193. Ultrasonic sound waves ?
A. Cannot be heard
B. Can be
heard with the help of microphone
C. Can be
heard by a normal human ear
D. Can be
heard with the help of hearing apparatus
194. In stationary wave?
A. All the
particles between two adjacent nodes vibrate in phase
B. All the
particles perform simple harmonic motion
C. Particles
on opposite sides of a node vibrate with a phase difference of
D. The amplitude of particle vibration at an anti node is equal to that
of either component wave
195. Assertion (A): Diffraction of sound waves
is more evident in daily experience than that of light waves. Reason (R): Sound
waves are longitudinal, while light waves are transverse?
A. Both A
and R correct and R is the correct explanation of A
B. Both A and R correct but R is the correct explanation of A
C. A is correct,but
R is incorrect
D. A is
incorrect but R is correct
196. A tuning fork when sounded together with
a tuning fork of frequency 256 emits two beats. On loading the tuning fork of
frequency 256, the number of beats heard are 1 per second. The frequency of the
tuning fork is?
A. 254
B. 256
C. 257
D. 258
197. Two organ pipes of same dimensions are
filled with hydrogen and oxygen respectively. If oxygen is 16 times heavier
than hydrogen the ratio of the fundamental frequencies of the two organ pipes
(assuming the elasticities of gases to be nearly equal)will be?
A. 16:1
B. 1:1
C. 4:1
D. 5:1
198. Assertion (A): Solids can transmit both
longitudinal and transverse wave. Reason (R):They resist changes in volume but
not changes of shape?
A. A is incorrect, but R is correct
B. Both A
and R are correct and R is the correct explanation of A
C. Both A
and R are correct, but R is not the correct explanation of A
D. A is
correct, but R is incorrect
199. In order to achieve good acoustic
property, a hall should have ?
A. Small but non-zero
B. Zero reverberation
C. Large reverberation
D. None of
the above is correct
200. A point on the crest of a transverse wave
shall reach the trough after time?
A. T/4
B. T/2
C. 3T/4
D. T
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