Class 11

Waves and Sound question bank (Physics)

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Q1.

The figure shows wave fronts in still water moving in the direction of the arrow towards the interface $PQ$ between a shallow region and a deep (denser) region. Which of the lines shown may represent one of the wave fronts in the deep region?

figure

(A)
$I$
(B)
$II$
(C)
$III$
(D)
$IV$
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Q2.

Given below are some examples of wave motion. State in each case if the wave motion is transverse,longitudinal or a combination of both:
$

(A)
$ Motion of a kink in a longitudinal spring produced by displacing one end of the spring sideways.
$
(B)
$ Waves produced in a cylinder containing a liquid by moving its piston back and forth.
$
(C)
$ Waves produced by a motorboat sailing in water.
$
(D)
$ Ultrasonic waves in air produced by a vibrating quartz crystal.
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