A myopic person has a power of -1.25 Dioptre. What is the focal length and nature of his lens?

(a) 50 cm and convex lens
(b) 80 cm and convex lens
(c) 50 cm and concave lens
(d) 80 cm and concave lens

Anurag Mishra Professor Asked on 15th February 2016 in Physics.
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Answer: (d) 80 am and concave lens 

Anurag Mishra Professor Answered on 16th February 2016.
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