Like light waves, sound waves also get reflected when these fall on the surface of an obstacle. B...
0Like light waves, sound waves also get reflected when these fall on the surface of an obstacle. But unlike light waves, sound waves do not necessarily require a polished surface for reflection. Also, transverse and longitudinal waves can be set up in strings to measure the speed of a palse through it.
Questions are based on the paragraph given above. Study the paragraph and answer the questions that follow.
For doing his experiment on verifying the laws of reflection of sound, a student sets up his apparatus as shown in Fig. The experiment is more likely to be performed successfully if the screen shown shown is a :
(a) plane wooden board
(b) wooden board with many holes in it
(c) a foam padded board
(d) a sheet of pure white cloth
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