Two sitar strings, A and B, playing the note 'Dha' are slightly out of tune and produce beats of frequency 5 Hz. The tension of the string B is slightly increased and the beat frequency is found to decrease by 3 Hz. If the frequency of A is 427 Hz, the original frequency of B is :

Answer

`422 Hz`

Explanation

the frequency of `B lt` frequency of A
`rArrf_(A)-f_(B)=5rArr427-f_(B)=5 rArr f_(B)=422Hz`