A person is standing on a railway platform and a train is approaching – McqOptions

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1.	A person is standing on a railway platform and a train is approaching to him, what is maximum wavelength of sound he can hear? Wavelength of whistle=1m, speed of sound in air=330m/s, speed of train=36km/h
A.	1m
B.	32/322m
C.	33/32m
D.	12/13m
Answer» C. 33/32m

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