Question

Parallel beam of light after passing through a convex lens pass through a point called

• A. Pole
• B. Centre of curvature
• C. Focus
• D. None of the above

Answer 1

The Correct Option is C

To solve the problem, we need to identify the point through which a parallel beam of light passes after passing through a convex lens.

1. Behavior of Light Passing Through a Convex Lens:
When parallel rays of light pass through a convex lens, they converge at a single point after refraction. This point is called the focus of the lens.

2. Understanding the Options:

Pole: The pole is the center of the lens and is not the point where parallel light rays converge after passing through the lens.

Centre of Curvature: The center of curvature is the center of the sphere of which the lens is a part, and it's not the point where the parallel rays focus.

Focus: The parallel rays converge at the focus of the lens. This is the correct answer.

None of the above: This option is incorrect because the correct answer is "Focus."

Final Answer:
The parallel beam of light after passing through a convex lens passes through a point called the Focus (Option C).