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Question

A convex lens can be regarded as a set of prisms and a glass slab, such that refracting angle of the prisms


A

continuously decrease in outward direction

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B

continuously increases in outward direction

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C

remains same in outward direction

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D

none of these

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Solution

The correct option is A

continuously decrease in outward direction


The explanation for the correct answer:

(a)continuously decrease in an outward direction

A convex lens act as a prism and a glass slab only when the refracting angle of the prism decreases in an outward direction.

The explanation for the incorrect answer:

(b) continuously increases in an outward direction

On refraction in the prism, the refracting angle will not increase as the ray is moving from a denser to a rarer medium.

(c) None of these

Option (a) is correct.


A convex lens can be regarded as a set of prisms and a glass slab, such that refracting angle of the prisms continuously decrease in an outward direction.


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