Q1 of 40 Page 60

---------- lens is used to correct the defect of vision termed as presbyopia.

Presbyopia is the decrease in accommodation power with ageing which can be corrected by bifocal lenses.

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1

The focal length of an eye lens is changed due to the action of ----------------.

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Which colours are reflected when white light is incident upon blue pigment?

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Which phenomenon does not play a role in the formation of rainbow?

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For which of the following cases, the total internal reflection of light will be possible?