Science, asked by sonub2305, 6 months ago

When two lenses of powers +4D and −3 D are placed in contact, the focal
length of the resultant lens is ?

Answers

Answered by punitdas086

0

Answer:

Focal lenght=100 cm

Explanation:

Pc= (4-3)D

Pc=1D

1/Fc= Pc/100

Fc=100/1=100cm

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