A boy watches a jet plane flying from north to south. When the jet is just seen above his head, the sound of jet appears to reach him makin some angle with horizontal from north.If the velocity of jet is v/2, then find the angle.
A
`60^(@)`
B
`30^(@)`
C
`45^(@)`
D
`15^(@)`
Text Solution
Verified by Experts
The correct Answer is:
A
Distance covered by sound to reach the boy `=("Distance covered by jet")/(costheta)` Velocity of jet=(velocity of sound) `xxcos theta` `rArr" "v/2=vcos theta" rArrtheta = 60^(@)`
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