JEE-MAIN SERIES Physics
Doppler Effect
4 previous year questions.
Volume: 4 Ques
Yield: Medium
High-Yield Trend
3
2023 1
2021 Chapter Questions 4 MCQs
01
PYQ 2021
medium
physics ID: jee-main
A source and a detector move away from each other in absence of wind with a speed of 20 m/s with respect to the ground. If the detector detects a frequency of 1800 Hz of the sound coming from the source, then the original frequency of source considering speed of sound in air 340 m/s will be _________ Hz.
02
PYQ 2023
medium
physics ID: jee-main
A train is moving with a speed of towards a platform and blows a horn with frequency . Find the frequency heard by a passenger standing on the platform. Take speed of sound = .
1
405 Hz
2
425 Hz
3
380 Hz
4
413 Hz
03
PYQ 2023
medium
physics ID: jee-main
A source of sound is moving away from a stationary observer with constant velocity 40 m/s. Find frequency heard by observer, if original frequency of source is 400 Hz and speed of sound in air is 360 m/s
1
330 Hz
2
320 Hz
3
360 Hz
4
280 Hz
04
PYQ 2023
medium
physics ID: jee-main
A car P travelling at 20 sounds its horn at a frequency of 400 Hz. Another car Q is travelling being the first car in the same direction with a velocity 40 . The frequency heard by the passenger of the car Q is approximately [Take, velocity of sound = 360 ]
1
485 Hz
2
421 Hz
3
471 Hz
4
514 Hz