| Assertion (A): The mirror formula 1/v + 1/u = 1/f is valid for mirrors of small aperture. |
| Reason (R): Laws of reflection of light is valid for only plane surface and not for large spherical surface. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is True
Correct Answer: C
Solution :
| Option [c] is correct. |
| Explanation: The mirror formula is derived under the consideration that the incident rays are paraxial which means that the rays lie very close to the principal axis. Hence the mirror aperture is considered to be small. So, the assertion is true. |
| Laws of reflection is valid for any surface plane or spherical. Hence the reason is false. |
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