JEE Main 10 April 2016 Paper

Section: Physics

Question : 11 of 90

Marks: +1, -0

A toy-car, blowing its horn, is moving with a steady speed of 5 m/s, away from a wall.An observer, towards whom the toy car is moving, is able to hear 5 beats per second.If the velocity of sound in air is 340 m/s,the frequency of the horn of the toy car isclose to :

[Main 10 Apr 2016]

680 Hz
510 Hz
340 Hz
170 Hz

Validate

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