Question

. A train is moving with 30 m/s and speed of
sound in air is 340 m/s. Another train is
moving in opposite direction with speed 15
m/s, then apparent frequency (genereted
frequency by first train is 440 Hz and
observer is in second train)
(1) 458 Hz(2) 450 Hz (3) 503 Hz(4) 490 Hz​

Answer 1

Explanation:

Apparent frequency, ν=(v−usv+u0)ν0=(333−33333+33)×1000=300366×1000=1220 Hz