Question

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

Options

• 2 × 10⁵

• 2 × 10⁶

• 2 × 10²

• 2 × 10⁴

Answer 1

2 × 10⁶ 

Explanation:

R.P = `D/(1.22 lambda) = 1.22/(1.22(5 xx 10^-7))` = 2 × 10⁶