Q)
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A pipe open at both ends produces a
frequency f1. When the pipe is kept with th of Its
Jength it water, it produced a note of frequency f.
12
note of
12
। ५
The ratio h is
आतति
3.
(a)
4
(b)
(c) 2
(d) 2
13
The fundamental frequency of a closed pipe is 220 Hz.
13
If
of the pipe is filled with water, the frequency of
एक
पाइप
the first overtone of the pipe now is
की
(a) 220 Hz
(b) 440 Hz
(c) 880 Hz
(d) 1760 Hz
14
The equation of stationary wave along a stretched
14
string is given by y = 5 sin-
TOX
cos 40 zt where x and y are
3
in centimetre and t in second. The separation
between two adjacent nodes is :
(b) 4 cm
(a) 6 cm
(d) 1.5 cm
(c) 3 cm
A bus is moving with a velocity of 5 m/s towards a
huge wall, the driver sounds a horn of frequency
165 Hz. If the speed of sound in air is 355 m/s, the
number of beats heard per second by a passenger on
15
15
the bus will be
(a)
(b) 5
(c)
(d)
4.
iome
6 Two identical sinusoidal waves each of amplitude 5
mm with a phạse difference of TE/2 are travelling in
the same direction in a string. The amplitude of the
resultant wave (in mm) is
(a)
16
Žero
5/2
...
