Science, asked by jagadass7437, 1 year ago

what will be the focal length of the lens combination when a lens of power 5d is kept in contact with a lens a lens of power -2d​

Answers

Answered by shaghiliqubal
1

Answer:

3d

Explanation:

P=P1+P2+P3+...+Pn

P=5+(-2)

P=5-2

P=3d

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