Q 1386145077.     The objective of a telescope has a diameter `5` cm. What is the angular separation in radius of two starts which can be resolved by the telescope when light of `3000 A^{ circ}` is used.

A

`7.32 times 10^{-6}`

B

`6.02 times 10^{-6}`

C

`7.12 times 10^{-6}`

D

`5.12 times 10^{-6}`

HINT

Resolving power `= frac{1.22 lambda}{d}`

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