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[" Wh) A policemen on duty detects a dro...

[" Wh) A policemen on duty detects a drop of 15"%" in the pitch of the horn of a motor-car as i "],[" crossh is heard "4" 23socenderst of car,if the velocity of sound is "330m/s" ."]

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A policeman on duty detects a drop of 10% in the pitch of the horn of a moving car as it crosses him. If the velocity of sound is 330 m//s , the speed of the car will be

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