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A jet plane flying at a constant velocit...

A jet plane flying at a constant velocity v at a height h = 8 km is being tracked by a radar R located at O directly below the line of flight . If the angle `theta` is decreasing at the rate of 0.025rad`//`s, the velocity of the plane when `theta = 60^(@)` is

A

1440 km`//`h

B

960km`//`h

C

1920km`//`h

D

480km`//`h

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The correct Answer is:
B
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FIITJEE-KINEMATICS-SECTION(II) : MCQ ( SINGLE CORRECT)
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