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Wavelength of ultrasonic waves in air is...

Wavelength of ultrasonic waves in air is of the order of :

A

`10^2 m`

B

`10^(1) m`

C

`10^(-1) m`

D

`10^(-2) m`

Text Solution

Verified by Experts

The correct Answer is:
C
For ultrasonics, frequency n `gt` 20,000 c/s
` lamda =(v)/( n) lt (330)/( 20, 000 ) ~= 10^(-2) m`
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