A car sounding its horn at 480Hz moves towards a high wall at a speed – McqOptions

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1.	A car sounding its horn at 480Hz moves towards a high wall at a speed of 20m/s, the frequency of the reflected sound heard by the man sitting in the car will be nearest to __________
A.	480Hz
B.	510Hz
C.	540Hz
D.	570Hz
Answer» D. 570Hz

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