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A sinusoidal wave produced in a stretche...

A sinusoidal wave produced in a stretched string gets reflected and loses `36%` of its energy in getting reflected from the fixed end of the string. Choose the correct statement from the

A

`("Amplitude of reflected wave")/("Amplitude of incident wave")=(8)/(10)`

B

Phase difference between incident and reflected wave is `pi`.

C

`("Frequency of reflected wave")/("Frequency of incident wave")=(4)/(5)`

D

None of the above

Text Solution

Verified by Experts

Let the incident wave has intensity `=I`
So, intensity of reflected wave `=0.64I`
`I prop A_(1)^(2)`
And, `0.641 prop A^(2)`
So `((A_(1))/(A_(R )))^(2)=((1)/(0.64))`
`rArr (A_(2))/(A_(1))=(4)/(5)`
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