Physics, asked by lakshaysingh5511, 9 months ago

Two lenses are kept in contact, what is the combined power of the combination. Given power of the first lens is + 4 D, focal length of the second lens is 20 cm and is used for correction of myopia.

Answers

Answered by aishu2102
0

Answer:

hello

Explanation:

Pcomb=P1+P2, p1=+4D, here P2=100/F and this lens use in correction of myopia means it is concave lens so F is negative then p2= -100/20, p2= -5D, then Pcomb.= +4-5 , Pcomb.= -1D

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