The light gathering power of a camera lens depends on | PHYSICS - OPTICAL INSTRUMENTS | SolveeIt | Solveeit

Today, August 24

Question

The light gathering power of a camera lens depends on

A

Its diameter only

B

Ratio of focal length and diameter

C

Product of focal length and diameter

D

Wavelength of light used

Answer

Its diameter only

Explanation

Solution

Light gathering power ∝ Area of lens aperture or d²