Question

Assertion (a): A ray passing through the center of curvature of a concave mirror, after reflection, is reflected back along the same path.

Reason (r): The incident rays fall on the mirror along the normal to the reflecting surface.

Options:
a) Both assertion and reason are true, and reason is the correct explanation of assertion.
b) Both the assertion and reason are true, and reason is not the correct explanation of assertion.
c) Assertion is true, but reason is false.
d) Assertion is false, but reason is true.

Answer 1

The ray passing through the center of curvature of a concave mirror is reflected back along the same path.

Step-by-step explanation:

The correct option is a) Both assertion and reason are true, and reason is the correct explanation of assertion.

When a ray passes through the center of curvature of a concave mirror and is reflected, it is indeed reflected back along the same path. This is because the ray strikes the mirror at normal incidence and according to the law of reflection, the angle of incidence is equal to the angle of reflection.

The reason is correct because the incident rays falling on the mirror along the normal to the reflecting surface ensures that the angles of incidence and reflection are equal, leading to the reflected ray following the same path as the incident ray.