The resolving power of a telescope whose lens has a diameter of 1.22 m for a wavelength of `5000 Å` is

Options

A. `2xx10^(5)`
B. `2xx10^(6)`
C. `2xx10^(2)`
D. `2xx10^(4)`

Answer

B

Explanation

Resolving power of telescope
`=D/(1.22 lamda)=1.22/(1.22xx(5000xx10^(-10)))`
`=(10^(7))/5=2xx10^(6)`