Assertion:- The formula `((1)/(4)+(1)/(u)=(1)/(f))` connecting u and v for a spherical mirror is valid only for mirros whose sizes are very small compared to their radii of curvatures.
Reason:- Laws of reflection are strictly valid for smaller size of of optical system.
A. If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.
B. If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion `&` Reason are False.
