1)

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

Answer:

Option A

Explanation:

 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