Target Exam

CUET

Subject

Physics

Chapter

Ray Optics

Question:

Resolving power of a telescope can be increased by increasing:

Options:

the wavelength

the diameter of the objective

the diameter of the eye piece

the focal length of eye piece

Correct Answer:

the diameter of the objective

Explanation:

The correct answer is Option (2) → the diameter of the objective

The resolving power of a telescope (R) is given by -

$R=\frac{Diameter(D)}{Wavelength(λ)}$

Hence, an increasing the diameter, the resolving power (R) increases.