Question

the point at which light rays converge and cross each other is called

convex lens

focal point

optical center

refraction

Explanation:

To solve this, we analyze each option:

• Convex Lens: A lens type, not a point. Eliminate.
• Focal Point: Defined as the point where light rays converge (for convex lenses or mirrors) and cross. Matches the description.
• Optical Center: A point in a lens through which light passes without deviation, not a convergence point. Eliminate.
• Refraction: The bending of light, not a point. Eliminate.

Answer:

B. Focal Point