Question

A ray of light coming parallel to the principal axis after passing through a convex lens, passes through its

• A. optical centre
• B. focus
• C. centre of curvature
• D. none of these

Answer 1

The correct option is B

focus

Explanation for the correct option,

1. Focus- After reflection from the mirror, the point on the principal axis where the incident rays that are parallel to the principal axis meet is termed as focus.
2. Any incident ray traveling parallel to the principal axis of a converging lens will refract through the lens and go through the focus, according to refraction rules.
3. After passing through a convex lens, a ray of light that is parallel to the major axis travels through its focus.
4. Diagram representation-

Hence, the correct answer is the focus (B).