Check sibling questions

Find the power of a concave lens of focal length 2 m.

 

Answer

Since focal length of concave lens is negative

Focal length = 2m



We know that,

Power of a lens = 1/Focal Length

                          = 1/( 2) 

                          = 0.5 D

 

Power of a concave lens is 0.5 D

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CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo