A source is moving towards an observer with a speed of 20 m/s and having frequency of 240 Hz. The observer is now going towards the source with a speed of 20 m/s. Apparent frequency heard by an observer (velocity of sound is 340 m/s) will be

Options

(a) 360 Hz
(b) 280 Hz
(c) 270 Hz
(d) 240 Hz

Correct Answer:

270 Hz

Explanation:

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