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  • For hearing the loudest ticking sound heard by the ear, find the angle x in the Fig.12.4.

For hearing the loudest ticking sound heard by the ear, find the angle x in the Fig.12.4.

Answers (1)

Explanation:-

Similar to light, sound also follows the law of reflection.

If I sound is coming at an incident angle =  \angle i 

reflection angle,

\angle i=\angle r.

In the given question, the sound coming through the first pipe has an angle of incidence equal to 40°

that can be calculated as

= (90° - 50°) = 40° 

The same sound will be reflected at an angle of 40°.

Therefore, the second pipe has to be kept at an angle of 40° from normal.

Therefore the value of x = 40°.

Posted by

infoexpert24

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