Four beats are produced on vibrating an unknown tuning fork with another fork of frequency 252 Hz. On loading the unknown fork with little wax and vib

Question

Four beats are produced on vibrating an unknown tuning fork with another fork of frequency 252 Hz. On loading the unknown fork with little wax and vib

Four beats are produced on vibrating an unknown tuning fork with another fork of frequency 252 Hz. On loading the unknown fork with little wax and vibrating with another fork 2 beats/s are produced. The frequency of unknown fork before loaded will be
A. 256 Hz
B. 254 Hz
C. 250 Hz
D. 248 Hz

Monjur Alahi

6 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - A
`n_(1) = n_(2) +- 4`
`= 252 +- 4 = 256 or 248 Hz`
`n_(1)` is loaded with little wax and sounded with `n_(2)` produces 2 b/s
`n_(1) = n_(2) +- 2`
`= 252 +- 2 = 254 or 250 Hz`
Frequency `n_(1)` before loaded increases by 2
`:. n_(1) = 256 Hz`

6 views Answered 2023-02-05 15:29