train , standing at the outer signal of a railway station blows awhistle of frequency 400 Hz in still air . (i) What is the frequency of the whistle for a platfrom observer when the trian (a) approaches the platform with a speed of 10 ms^(-1) (b) recedes from the platfrom with a speed of 10 ms^(-1)? (ii) What is the speed of sound in each case ? The speed of sound in still air can be taken as340 m * s^(-1) .

train , standing at the outer signal of a railway station blows awhist

1.	train , standing at the outer signal of a railway station blows awhistle of frequency 400 Hz in still air . (i) What is the frequency of the whistle for a platfrom observer when the trian (a) approaches the platform with a speed of 10 ms^(-1) (b) recedes from the platfrom with a speed of 10 ms^(-1)? (ii) What is the speed of sound in each case ? The speed of sound in still air can be taken as340 m * s^(-1) .
Answer» SOLUTION :N/A