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PART - 2 CH - 14 Waves — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsPART - 2 CH - 14 Waves2 Marks
Question
When a tunning fork of unknown frequency is played with a 252 Hz frequency tuner, 2 beats per second are heard. Then find the frequency of unknown tuning fork.
✓

Answer

The possible frequency of the unknown running bork will be :
$=254 \pm 4=258$ or 250
According to second experiment, the possible frequency of the unknown tunning fork will be:
$=252 \pm 2=254$ or 250
But both the experiments the frequency of the unknown tunning fork will same.
Hence, the frequency of the unknown tunning fork will be 250 vibration/second.

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