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A source of sound S is travelling at (10...


A source of sound S is travelling at `(100)/(3)(m)/(s)` along a road, towards a point A. When the source is 3 m away from A, a person standint at a point O on a road perpendicular to AS hears a sound of requency `v'`. The distance of O from A at that time is 4 m. If the original frequency is 640 Hz, then the value of `v'` is (velocity of sound is `340(m)/(s)`)

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A source of sound of frequency 640 Hz is moving at a velocity of 100/3m//s along a road, and is at an instant 30m away from pint A on the road (as shown in figure. A person standing at O, 40m away from the road hears sound of apperent frequency v'. The value of v' is (velocity of sound = 340m//s )

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