A whistle sends out 256 waves in a second. If the whistle approaches t – McqOptions

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1.	A whistle sends out 256 waves in a second. If the whistle approaches the observer with velocity 1/3 of the velocity of sound in air, the number of waves per second the observer will receive [MP PET 1990; DPMT 2002]
A.	384
B.	192
C.	300
D.	200
Answer» B. 192

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