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An aircraft is flying at a height of 340...

An aircraft is flying at a height of 3400 m above the ground. If the angle subtended at a ground observation point by the aircraft positions 10 s apart is `30^(@)`, then the speed of the aircraft is

A

19.63 `ms^(-1)`

B

1963 `ms^(-1)`

C

108 `ms^(-1)`

D

196.3 `ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`tan theta = (L)/(A)`

`tan 30^(@) = (10v)/(3400)`
`v = (340)/(sqrt(3)) = 196.3 ms^(-1)`
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