Question

what is convex. ............?????

Answer 1

the bulging surface of the mirror is called convex

Answer 2

$\huge Hello$$\huge friends,$


$<B>Definition:$

This type of lens is thicker at the centre and thinner at the edges.

An optical lens is generally made up of two spherical surfaces. If those surfaces are bent outwards, the lens is called a biconvex lens or simply convex lens. These type of lenses can converge a beam of light coming from outside and focus it to a point on the other side. This point is known as the focus and the distance between the centre of the lens to the focus is called the focal length of convex lens. However, if one of the surfaces is flat and the other convex, then it is called a plano-convex lens.




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