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Two loudspeaker L(1) and L(2), driven b...

Two loudspeaker `L_(1)` and `L_(2)`, driven by a common oscillator and amplifier, are arranged as shown. The frequency of the oscillator is gradually increased from zero and the detector at D records a series of maxima and minima. If the speed of sound is `330 ms^(-1)`, then at what frequency (in Hz) does the first maximum is observed?

A

165 Hz

B

330 Hz

C

495 Hz

D

660 Hz

Text Solution

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The correct Answer is:
B
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