Student Login

Home›Chapters›Wave Motion PYQs›Doppler Effect›Question 12

MHT CET 2025 (23 Apr, Shift 1) · Doppler Effect

Doppler Effect question from MHT CET 2025 (23 Apr, Shift 1)

Q12MHT CET 2025 · 23 APR · SHIFT 1Easy

Doppler Effect

An observer moves towards a stationary source of sound with a velocity of one fifth of the velocity of sound. The percentage increase in the apparent frequency is

Show answer and solution

Answer: (c)

Observer approaching: $n' = n\frac{v + v_o}{v}$ .
$n' = n\left(1 + \frac{1}{5}\right) = 1.2n$
Increase $= 20\%$ . So the answer is (c) $20\%$ .

Report a mistake

More questions on Doppler Effect

A person observes two moving trains. First reaching the station and another leaves the…MHT CET 2025 (5 May, Shift 2)
When source of sound and observer both are moving towards each other, the observer will…MHT CET 2025 (22 Apr, Shift 2)
When the observer moves towards a stationary source with velocity V₁, the apparent…MHT CET 2025 (26 Apr, Shift 2)
When an observer moves towards a stationary source with velocity ' V₁ ', the apparent…MHT CET 2025 (20 Apr, Shift 1)
A source of sound emits sound wave of frequency ' f ' and moves towards an observer with…MHT CET 2025 (26 Apr, Shift 1)
If a source emitting waves of frequency ' F ' moves towards an observer with a velocity…MHT CET 2025 (23 Apr, Shift 2)
A vehicle starts from rest and accelerates along straight path at 2 m/s². At the starting…MHT CET 2025 (21 Apr, Shift 2)
An observer moves towards a stationary source of sound with a velocity of one-fifth of…MHT CET 2024 (3 May, Shift 2)