Question

Which type of mirror is a concave mirror ?

• A. Divergent
• B. Convergent
• C. Both convergent and divergent
• D. None of these

Hint:

A simple mnemonic: Concave mirrors have a "cave" and they make light rays come together (converge) into that cave.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Mirrors are classified as convergent or divergent based on their effect on a parallel beam of light after reflection.

Step 2: Detailed Explanation:
A concave mirror has a reflecting surface that is curved inwards (like the inside of a spoon). When a parallel beam of light rays strikes a concave mirror, the rays are reflected and meet, or converge, at a single point called the principal focus (F). Because it brings light rays together, a concave mirror is known as a convergent mirror.
In contrast, a convex mirror has a reflecting surface that bulges outwards. It reflects a parallel beam of light so that the rays appear to spread out, or diverge, from a point behind the mirror. Thus, a convex mirror is a divergent mirror.

Step 3: Final Answer:
A concave mirror is a convergent mirror.