In which of the following cases a light ray suffers the maximum deviation while passing through pole?
A
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B
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C
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D
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Solution
The correct option is D Thinner the lens i.e. (the central part of the lens), lesser is the deviation, as shown in the figure.
The centre of the lens is similar to a glass slab. The lens is made thin so that the deviation of light ray is negligible if it falls on the optical centre of the lens.