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Chitranjan Azhar Sabharwal
Asked: 2022-11-06T15:38:13+05:30 In:

On sounding fork `A` with another tuning fork `B` of frequency `384 Hz , 6 beats` are produced per second .After loading the prongs of `A` with wax and then sounding it again with `B , 4 beats` are produced per second. What is the frequency of the tuning fork `A`.
A. `388 Hz`
B. `80 Hz`
C. `378 Hz`
D. `390 Hz`

On sounding fork `A` with another tuning fork `B` of frequency `384 Hz , 6 beats` are produced per second .After loading the prongs of `A` with wax and then sounding it again with `B , 4 beats` are produced per second. What is the frequency of the tuning fork `A`.
A. `388 Hz`
B. `80 Hz`
C. `378 Hz`
D. `390 Hz`
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  1. Correct Answer – D
    Probable frequency of `A is 390 Hz and 378 Hz ` after loading the beats are decreasing from ` 6 “to” 4` so the original frequency of `A` will `390 Hz`.

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