Question

Laws of reflection are always true for:

• A. only concave mirror
• B. only convex mirror
• C. only plane mirror
• D. all of these

Hint:

The laws of reflection hold true for all types of mirrors: concave, convex, and plane mirrors.

Answer 1

The Correct Option is D

The laws of reflection state that:
1. The angle of incidence is equal to the angle of reflection.
2. The incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane.
These laws are universally applicable to all types of mirrors, whether they are concave, convex, or plane mirrors.

Step 1: Concave mirror.
A concave mirror, which is a spherical mirror with an inward-curved reflecting surface, follows the laws of reflection. The incident ray and reflected ray are related by the angle of incidence and reflection, as stated in the law.

Step 2: Convex mirror.
A convex mirror, which has an outward-curved reflecting surface, also follows the same laws of reflection. In this case, the reflected rays appear to diverge, but the angle of incidence and the angle of reflection still follow the law of reflection.

Step 3: Plane mirror.
A plane mirror, which has a flat reflecting surface, also follows the same laws of reflection. The angle of incidence equals the angle of reflection in the case of a plane mirror as well.

Step 4: Conclusion.
Thus, the laws of reflection are applicable to all types of mirrors: concave, convex, and plane mirrors. The correct answer is (D).