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Select the correct property/properties from among the following, with respect to the reflection of light by a concave mirror.(a) Light does not obey t
Question

Select the correct property/properties from among the following, with respect to the reflection of light by a concave mirror.
(a) Light does not obey the laws of reflection as the concave surface is a curved surface.
(b) A light ray directed on to the pole of a concave minror retraces the path of incidence in the opposite direction.

A.

Both (a) and (b) correct

B.

Only (b) is correct

C.

Both (a) and (b) are incorrect

D.

Only (a) is correct

Correct option is C

Statement (a): "Light does not obey the laws of reflection as the concave surface is a curved surface."
  • This statement is incorrect. Light always obeys the laws of reflection (angle of incidence = angle of reflection) irrespective of whether the surface is curved or flat.
  • The fact that the mirror is curved doesn't change the fundamental principle of reflection. The surface curvature only affects how light is reflected, but the laws of reflection still apply.
Statement (b): "A light ray directed onto the pole of a concave mirror retraces the path of incidence in the opposite direction."
  • This statement is also incorrect. When a ray of light strikes the pole (the center) of a concave mirror, it does not necessarily retrace its path.
  • The ray will reflect according to the law of reflection, but it will not return along its original path unless the ray is specifically incident along the normal (perpendicular to the mirror's surface), which is a rare specific case.
Conclusion:
Since both statements (a) and (b) are incorrect, the correct answer is:
C. Both (a) and (b) are incorrect

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