Question

the point at which light rays converge and cross each other is called __________?
○ convex lens
○ focal point
○ optical centre
○ refraction

Explanation:

To solve this, we analyze each option:

• Convex Lens: A type of lens, not a point where light converges.
• Focal Point: Defined as the point where light rays converge and cross, matching the description.
• Optical Center: The center of a lens, not related to convergence point.
• Refraction: The bending of light, not a point.

Answer:

B. Focal Point (assuming the options are labeled A - D with B as Focal Point; if original labels differ, adjust, but based on content, the correct option is the one with "Focal Point")