Question

What do you understand by reflection of sound? Write laws of reflection of sound.
For hearing the loudest ticking sound heard by the ear, find the angle x in the fig. 7.3.​

Answer 1

Answer:

Ans1) The returning of the sound in the same medium after striking a surface is called reflection of sound.

Ans2) The laws of reflection of sound are as follows:-

1) The incident ray is equal to the reflected ray.

2) The incident ray, the reflected ray and the normal all lies on the same plane.

Ans3) Incident Ray = 90 - 50 = 40°.

Since, the incident ray is equal to reflected ray.

Therefore, Reflected Ray = x = 40°

Explanation:

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Answer 2

Answer:

from figure angle of incidence =90°-50°=40°

to hear the ticking sound loudly the angle of reflection of sound wave should be equal to the angle of incidence

angle x=40°

hope this helps u.....