Doppler Effect in Sound

JEE Main Physics · Waves · 5 questions, latest first

• A car P travelling at 20 ms^-1 sounds its horn at a frequency of 400 Hz. Another car Q is travelling behind the first car in the…202311 April, Shift 2 · Q31
• The engine of a train moving with speed 10 ms^-1 towards a platform sounds a whistle at frequency 400 Hz. The frequency heard by…20238 April, Shift 1 · Q31
• A 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…20236 April, Shift 1 · Q51
• A person observes two moving trains, 'A' reaching the station and 'B' leaving the station with equal speed of 30 m / s. If both…202329 January, Shift 1 · Q16
• A train blowing a whistle of frequency 320 Hz approaches an observer standing on the platform at a speed of 66 m / s. The…202325 January, Shift 2 · Q30