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Q.

At Kavalur in India, the astronomers using a telescope whose objective had a diameter of one meter started using a telescope of diameter 2.54 m. This resulted in

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a

The increase in the resolving power by 2.54 times for the same λ

b

The increase in the limiting angle by 2.54 times for the same λ

c

Decrease in resolving power

d

No effect on the limiting angle

answer is A.

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Detailed Solution

RP=D1.22λ RP∝D R2R1=D2D1=2.541=2.54
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