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If equation of a sound wave is...

If equation of a sound wave is

A

`2 unit`

B

`0.3 unit`

C

`0.1unit`

D

`0.2 unit`

Text Solution

Verified by Experts

The correct Answer is:
c
The standard equation of sound wave is
`y = a sin 2 pi ((x)/(lambda) = (t)/(T))`
where a is amplitude , `lambda` is wavelength and T is time period
Given equation of wave is
`y = 0.0015 sin (62.8 x- 3) (4t)`…(i)
Comparing given Eqs (i) with standed wave we get
`(2 pi)/(lambda) = 62.8`
`rArr lambda = (2 pi)/(62.8) = (2 xx 3.14)/(62.8) = 0.1 unit`
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Equation Of Sound Wave