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A person with a defective sight is using...

A person with a defective sight is using a lens having a power of +2D. The lens he is using is

A

concave lens with f = 0.5 m

B

convex lens with `f = 2.0 m`

C

concave lens with `f = 0.2 m`

D

concave lens with `f = 0.5 m`

Text Solution

Verified by Experts

The correct Answer is:
D
`f = (1)/(p) = (1)/(2)` metre
f = 0.5 m this is positive so lense is convex lense.
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