An optician while testing the eyes finds the vision of a patient to be 6/12. By this means that

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The person can read the letters of 6 inches from a distance of 12 m

The person can read the letters of 12 inches from 6 cm

The person can read the letters from 6m which the normal eye can read from 12 m

The focal length of eye lens had become half that of the normal eye.

answer is C.

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Detailed Solution

Ability of person that can read is 6m. where as normal eye person (without sight ) can read even 12 m distance.

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