Waves
Class 11 · Waves · Practice
Doppler — Source Moving — Previous-Year Questions
5 previous-year questions on Doppler — Source Moving, drawn from JEE Mains, JEE Advanced, NEET UG, and CUET papers. Every question carries a worked-out explanation.
Q1. An ambulance siren at 1000 Hz approaches a stationary observer at 30 m/s. Sound speed 330 m/s. Apparent frequency:
JEE 2022Q2. If the ambulance is RECEDING at 30 m/s instead:
JEE 2021Q3. If a source moves AT the speed of sound:
JEE 2020Q4. Police radar uses Doppler effect on:
JEE 2019Q5. Mach angle of an aircraft at Mach 2 (v_s = 2v):
JEE 2018Doppler — Source Moving previous-year questions from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics practice for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG candidates.