Ex./90 A car moving at 40 km/hr passes a factory as a siren of frequency 500 Hz is sounded. What does the frequency appear to be to the driver of the car before and after passing by the factory ? [Speed of sound in air = 340 m/s]
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![Ex. 90: A car moving at 40 km/hr passes a
factory as a siren of frequency 500 Hz is
sounded. What does the frequency appear to be
to the driver of the car before and after passing
by the factory ? [Speed of sound in air
= 340 m/s]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4461fea5-1ba5-4b00-b85e-7f53c025c9d6%2Fd46289d5-541f-460d-b46b-0120942e26c1%2F4brvhst_processed.jpeg&w=3840&q=75)
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