Q. Amount of light entering into the camera depends upon
A) Focal length of the objective lens
B) Product of focal length and diameter of the objective lens
C) Distance of the object from camera
D) Aperture setting of the camera
Explanation
The correct answer is Option D: Aperture setting of the camera.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.