What are hollow lenses?

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Thicker from both the positions

Thinner from both the positions

Thicker from the centre than at the edge

Thinner from the centre than at the edge

answer is B.

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Detailed Solution

A concave lens is thinner in the middle than at the edges. Diverging Lens or Concave Lens It's a lens that possesses at least one face that curves inwards in the middle.

Concave lenses are thinner from the centre than at the edge. still, convex lenses are thicker from the centre than at the edge.

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