Question

The resolving power of a telescope whose lens has a diameter of 1.22 m for a wavelength of `5000 Å` is
A. `2xx10^(5)`
B. `2xx10^(6)`
C. `2xx10^(2)`
D. `2xx10^(4)`

Answer 1

Correct Answer - B
(b) Resolving power of telescope =`d/(1.22lamda)=1.22/(1.22xx500xx10^(-10))`
`=2xx10^(6)`