Question

(Argent)-what is the difference between concave lens and convex lens ?​

Answer 1

• Concave describes shapes that curve inward, like an hourglass.
• Convex describes shapes that curve outward, like a football (or a rugby ball)

Answer 2

A convex lens is thicker at the centre and thinner at the edges. A concave lens is thicker at the edges and thinner at the centre. Due to the converging rays, it is called a converging lens. Due to the diverging rays, it is called a diverging lens.

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