A train moving with a velocity `30ms^(-1)` blows a whistle of frequency 516 Hz. Find the pitch of the sound heard by a passenger in another train approaching the first at a speed of `15ms^(-1)`, velocity of sound = `330ms^(-1)`.
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It both the trains are approaching each other. The apparent frequency `n.=((v+v_(0))/(v-v_(s)))n` `n.=((330+15)/(330-30))xx516` `n.=(345)/(300)xx516=1.15xx516` `n.=593.4Hz`
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