Question

The relation between intensity (I) of image formed by a spherical mirror and area of aperture (A) is

• A. I ∝ A
• B. $I\propto A^2$
• C. $I\propto \frac{1}{A}$
• D. $I\propto \frac{1}{A^2}$

Answer 1

The correct option is A I ∝ A

Intensity of image ∝ area of the aperture
I ∝ A
Hence, the correct answer is option (a).