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Defects of Vision and Their Correction

A student sit...

Question

A student sitting at the back of the classroom cannot read clearly the letters written on the blackboard. What advice will a doctor give to her?

A

Doctor advises her to use a convex lens of appropriate power.

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B

Doctor advises her to use a concave lens of appropriate power.

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C

Doctor advises her to use a plane mirror of appropriate power.

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D

Doctor advises her to use a plano convex lens of appropriate power.

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Solution

The correct option is B Doctor advises her to use a concave lens of appropriate power.
The student is suffering from myopia (near sightedness). Doctor advises her to use a concave lens of appropriate power to correct this defect.

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Defects of Vision and Their Correction

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