Physics, asked by advbirjpalnagar, 10 hours ago

A convex lens of focal length 40 cm is placed in contact with a concave lens of focal length 20 cm
What is the equivalent focal length of the combination ? Is the combination is divergent
convergent ?

Answers

Answered by aakashmutum

2

The power of the combination is. P=1f=1f1+1f2=10.4+1-0.25=-1.5diopter.

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