A. 10 kg
B. 20 kg
C. 30 kg
D. 40 kg
122. A tuning fork of frequency 512 produces 6
beats in 1 second, when vibrating along with
a vibrating segment of a monometer wire. The frequency of the vibration of
sonometer wire is
A. 512
B. 506
C. 518
D. 506 and 518
123. A tuning fork of frequency 645 Hz, gives
resonance for 0.5 m column of hydrogen gas enclosed in a pipe closed at one
end. The speed of sound in hydrogen will be equal to
A. 2580 m/s
B. 322.5 m/s
C. 645 m/s
D. 1290 m/s
124. The pitch of a sound is determined by
A. Frequency
B. Speed
C. Direction
D. Number of
beats
125. At the mean position of vibration, the
velocity of the vibrating particle is
A. Zero
B. Infinity
C. Maximum
D. None of
the above
126. A particle moving with S.H.M passes
through two points A and B, with the same velocity, having occupied 2 seconds in passing from A to B;
after another 2 seconds it returns to B. The period is
A. 2 seconds
B. 4 seconds
C. 5 seconds
D. 8 seconds
127. Energy is not transferred in a standing
wave
A. False
B. Uncertain
C. True
D. None of
these
128. Two similar open organ pipes when sounded
together produce 7 beats/sec. If their lengths
are in the ration of 50: 51, then the ration of their frequencies will be
A. 357:350
B. 50:51
C. 51:50
D. 1:7
129. The Laplaces's correction in the
expression for the velocity of sound given by Newton is needed because sound waves
A. Are longitudinal
B. Propagate
isothermally
C. Propagate adiabatically
D. Are of
long wavelengths
130. What is the shape of the liquid meniscus
in a capillary tube placed in a liquid that wets the surface of the tube?
A. Flat
B. Concave
downwards
C. Convex up
D. None of
the above is correct
