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A car moving at 20 m//s with its horn bl...

A car moving at `20 m//s` with its horn blowing (n = 1200 Hz) is chasing another car going at `15 m//s`. What is the apparent frequency of the horn as heard by the driver being chased? Take the speed of the sound to be `340 m//s`:

A

1219Hz

B

1183Hz

C

1275Hz

D

1083Hz

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The correct Answer is:
A
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