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A source S emitting sound of 300 Hz is f...


A source S emitting sound of 300 Hz is fixed of block A which is attached to free end of a spring `S_A` as shown in the figure. The detector D fixed on block B attached to the free end of spring `S_B` detects this sound.
The blocks A and B are simultaneously displaced towards each other through of 1.0 m and then left to vibrate. Find the maximum and minimum frequencies of sound detected by D if the vibrational frequency of each block is 2 Hz (velocity of sound is 340 m/s).

A

323 Hz, 278.6 Hz

B

276.8 Hz, 330 Hz

C

260 Hz , 241 Hz

D

340 Hz , 260 Hz

Text Solution

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The correct Answer is:
A
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