35.Assertion : Radius of curvature of a spherical mirror is half its focal length.
Reason : A ray of light incident parallel to principal axis after reflection passes through
Answers
Explanation:
both is true but R is not correct explanation of A
Both assertion and reason are true. But Reason is not the correct explanation of Assertion.
Assertion : Radius of curvature of a spherical mirror is half its focal length.
The relation among focal length (f) and radius of curvature (R) of around mirror is that the focal length is identical to 1/2 of the radius of curvature i.e. f=R2.
The distance from the pole to the middle of curvature is known as the radius of curvature (r). The distance from the pole to the point of interest is known as the focal length (f). The focal period of around mirror is then about 1/2 of its radius of curvature.
Actually, the focal duration of a spherical mirror is 1/2 of the radius of curvature of the replicate. The focal length of a lens of non-negligible thickness is certainly depending on the refractive index of the material amongst different factors.