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MHT CET 2023 (9 May, Shift 1) · Doppler Effect

Doppler Effect question from MHT CET 2023 (9 May, Shift 1)

Q31MHT CET 2023 · 9 MAY · SHIFT 1Easy

Doppler Effect

When both source and listener are approaching each other the observed frequency of sound is given by $(V_L$ and $V_S$ is the velocity of listener and source respectively, $n_0 =$ radiated frequency)

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Answer: (a)

Listener moving towards the source raises the received rate: numerator $V + V_L$ .
Source moving towards the listener shortens the wavelength: denominator $V - V_s$ .
$n = n_0\left[\frac{V + V_L}{V - V_s}\right]$ . So the answer is (a).

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