A police car with a siren of frequency 8kHz is moving with uniform velocity 36 km/h towards a tall building which reflects the sound waves. Speed of sound in air is 320m/s. Frequency of siren heard by car driver is

Question:

Options :

a)8.50KHz
b)8.25KHz
c)7.75KHz
d)7.50KHz

Answer :

a)8.50KHz

Answer Steps :

Step:-1

Step:-2

Step:-3

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