Which of the above optical systems (given that all surfaces are made of transparent glass and the bold surfaces represent mirrors) can be considered as a lens?

I, V, IV, II

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I, II, III, V

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I, II, III, IV

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I, IV only

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Solution

The correct option is C
I, II, III, IV

The fifth optical system has two plane mirrors and hence it can't be considered as a lens. The lens should have at least one spherical mirror.

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Which of the above optical systems (given that all surfaces are made of transparent glass and the bold surfaces represent mirrors) can be considered as lenses?

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Which of the above optical systems (given that all surfaces are made of transparent glass and the bold surfaces represent mirrors) can be considered as a lens?

The correct option is C I, II, III, IV The fifth optical system has two plane mirrors and hence it can't be considered as a lens. The lens should have at least one spherical mirror.

The correct option is C
I, II, III, IV

The fifth optical system has two plane mirrors and hence it can't be considered as a lens. The lens should have at least one spherical mirror.