Physics | MHT CET 2016 | Discussion Page

Resolving power of telescope increases when

A) wavelength of light decreases

B) wavelength of light increases

C) focal length of eye-piece increases

D) focal length of eye-piece decreases

Option A

Resolving power of a telescope is given by

RP= $\frac{d}{1.22 \lambda}$

i.e, $RP\propto \frac{1}{\lambda}$

Where $\lambda$ (wavelength of light) decreases, resolving power of a telescope increases

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