Q144 / 150 · MHT CET 2016 · Physics

Resolving power of telescope increases when

Correct answer
A
wavelength of light decreases.
B
wavelength of light increases.
C
focal length of eye-piece increases.
D
focal length of eye-piece decreases.

Solution

Resolving power of telescope is given by

P = \frac{d}{1.22 λ}

When

λ

decrease, resolving power increases and vice versa

Hence, the correct answer is option: 'A'.

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