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A room contains air in which the speed of sound is `340m//s.` The walls of the room are made of concrete in which the speed of sound is `1700m//s` (a)

Monjur Alahi

A room contains air in which the speed of sound is `340m//s.` The walls of the room are made of concrete in which the speed of sound is `1700m//s` (a) Find the critical angle for total internal refection of sound at the concrete-air boundary.(b) in which medium must the sound be travelling to undergo total internal reflection?


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Salim Ahmed Kawsar

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Correct Answer - (a) `sin^(-1) ((1)/(5))`; (b) air

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2 Answers 4 views
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2 Answers 1 views

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