Physics, asked by hansabagdi1, 3 months ago

DEFINE FOCUS AND OPTICAL CENTRE FOR A SPHERICAL MIRROR

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Answered by Anonymous

2

Explanation:

In case of concave lens, these rays of light appear to diverge Worn a point. This point is called the main focus of spherical lens. Optical Centre : The point on a lens through which a ray of light passes without deviation is called the optical centre of the lens.

Answered by Anonymous

5

Optical Centre : The optical centre is defined as the geometric centre of the curved lens . ... Focus :The principal focus is defined as the point on the principal axis where the light rays traveling parallel to the principal axis after refraction actually meet (for a convex lens) or appear to meet (for a concave lens).........

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