JEE Main Physics · Waves
Moving Reflector Echo
Moving Reflector Echo (Waves) was asked 2 times in 2 JEE Main shifts, 2022–2023, out of the 42 shifts Lumi analysed. 2 of the 2 had a numerical answer.
- Times asked
- 2
- in 2 shifts
- Years
- 2022–2023
- Usual format
- Numerical value
- Calculation
- Pattern
- Occasional
- repeats across shifts
How it is asked
- Frequency from echo shift off wall
- Echo frequency for moving source
Difficulty
Easy 0Medium 2Hard 0
Where it sits
Chapter: Waves. Topic: Doppler Effect, 4 questions over 3 ideas.
Every time it came
All 2 questions
Newest first, each with its options and official answer.
- 6 Apr 2023, Shift 1 · Q51A person driving car at a constant speed of 15 m/s is approaching a vertical wall. The person notices a change of 40 Hz in the frequency…MediumNumerical value
- 28 Jul 2022, Shift 1 · Q57The frequency of echo will be __________ Hz if the train blowing a whistle of frequency 320 Hz is moving with a velocity of 36 km/h…MediumNumerical value