A source is moving towards an observer with a speed of 20 m/s and havi – McqOptions

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1.	A source is moving towards an observer with a speed of 20 m/s and having frequency of 240 Hz. The observer is now moving towards the source with a speed of 20 m/s. Apparent frequency heard by observer, if velocity of sound is 340 m/s, is [CPMT 2000; KCET 2001; MH CET 2004]
A.	240 Hz
B.	270 Hz
C.	280 Hz
D.	360 Hz
Answer» C. 280 Hz

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