Question Detail

PHY 104 PHY 104 Past Questions Objective Question

Question

Which statement about a converging lens is not correct?
Options
A A ray parallel to the principal axis of the lens is refracted through the principal focus.
B All rays of light refracted by the lens pass through the principal focus.
Correct Answer
C The distance between the center of the lens and the principal focus is the focal length.
D The principal focus of the lens is a point on the principal axis.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Not all rays pass through the principal focus. Only rays parallel to the principal axis pass through the focal point after refraction. Rays passing through the optical center go straight without bending.

Hint

Only parallel rays converge at the focal point.

Question Info