The speed of sound in air at a given temperature is 350 m/s. An engine blows whistle at a frequency of 1200 cps. It is approaching the observer with velocity 50 m/s. The apparent frequency in cps heard by the observer will be [CPMT 1976; RPET 1999; BHU 1997, 2001]

If assertion is true but reason is false.

The speed of sound in air at a given temperature is 350 m/s. An engine

1.	The speed of sound in air at a given temperature is 350 m/s. An engine blows whistle at a frequency of 1200 cps. It is approaching the observer with velocity 50 m/s. The apparent frequency in cps heard by the observer will be [CPMT 1976; RPET 1999; BHU 1997, 2001]
A.	600
B.	1050
C.	If assertion is true but reason is false.
D.	2400
Answer» D. 2400

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The speed of sound in air at a given temperature is 350 m/s. An engine blows whistle at a frequency of 1200 cps. It is approaching the observer with velocity 50 m/s. The apparent frequency in cps heard by the observer will be [CPMT 1976; RPET 1999; BHU 1997, 2001]

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