Convex lens are thicker in the middle and thinner at the edges. State whether True or False.
There are 8 edges in the cube. State whether the given statement is true or false.
A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads : Left eye : + 2.50 D Right eye : + 2.00 D (a) State whether these lenses are thicker in the middle or at the edges. (b) Which lens bends the light rays more strongly ? (c) State whether these spectacle lenses will converge light rays or diverge light rays.