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	A train approaching a crossing at a speed of 100 km/h sounds a whistle `400 Hz` when it is (Doubtnut) View
$Download Lagu A train approaching a railway crossing at a speed of $ 120 \mathrm{~km} / \mathrm{h} $ sounds ...$	A train approaching a railway crossing at a speed of $ 120 \mathrm{~km} / \mathrm{h} $ sounds ... (PW Solutions) View
	A train approaching a hill at a speed of `40 km//hr` sounds a whistle of frequency `580 Hz` when... (Doubtnut) View
	A train approachign a railway crossing at a speed of `120 kmh^-1` sounds a short whistle at freq... (Doubtnut) View
	A train approaching a platform at a speed of `54 km h^-1` sounds a whistle. An observer on the p... (Doubtnut) View
	An observer standing at station observes frequency `219 Hz` when a train approaches and `184 Hz` (Doubtnut) View
	Physics Web Assign Ch 14 #15 (Mike Birkhead) View
	JEE Advanced Physics 2019 Paper 1 #15 (#15) Doppler Shift (Michel van Biezen) View
	Two trains are moving towards each other at speeds of `72kmh^-1` and `54 kmh^-1` relative to the... (Doubtnut) View
	When a train approaches a stationary observer, the apparent frequency of the whistle (Doubtnut) View