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Question

Long-sightedness is caused by the eyeball being too short. It can be corrected by the use of a :

A
convergent lens
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B
plane mirror
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C
divergent lens
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D
concave mirror
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Solution

The correct option is B convergent lens
In long sightedness, size of the eyes ball decrease due to which image of the object formed behind the ratina. This defect can be corrected by using additional converging lens of sufficient power. That lens will help the eyes to formed image on the ratina. Hence converging lens required.

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