Question

Which of the following statements is true?
A concave lens has-4 dioptre power having focal length 0.25m
O A convex lens has-4 dioptre power having a focal length 0.25m
A convex lens has 4 dioptre power having a focal length 0.25m
A concave lens has 4 dioptre power
having focal length 0.5m
$answer \: it \: asap..$
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Answer 1

Answer:

it on your question only

A convex lens has-4 dioptre power having a focal length 0.25m