Question

A telescope has large diameter of the objective. Then its resolving power is ______.

Options

• independent of the diameter of the objective

• low

• zero

• high

Answer 1

A telescope has large diameter of the objective. Then its resolving power is high.

Explanation:

Resolving power of a telescope is given,

x = `"a"/(1.22 lambda) => x prop "a"`

where, a = diameter/aperture of objective a telescope and λ = wavelength of light.

So, when the aperture (diameter) of objective is large, then its resolving power is high.