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What should be the velocity(v) of a sound source moving towards a stationary observer

What should be the velocity(v) of a sound source moving towards a stationary observer so that apparent frequency is double the actual frequency

Options

(a) v
(b) 2v
(c) v/2
(d) v/4

Correct Answer:

v/2

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

MP2002
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