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Q.

The aperture of the objective is 24.4 cm. The resolving power of this telescope, if a light of wavelength 2440 Ao is used to see the object will be :

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a

8.2×105

b

8.1×106

c

10.0×107

d

1.0×10−8

answer is C.

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Detailed Solution

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 R.P =d1.22λ=24.4×10−21.22×2440×10−10=8.2×105

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