Physics, asked by Kannu1259, 1 year ago

two thin lens of power +6D and -2D are in contact.what is the focal length of the combination?

Answers

Answered by shivam05032004
1

So....

Given, P1=6D

and, P2=(-2D)

So total power:-

P1+P2=6D+(-2D)

=6D-2D

=4D....

So the final power is 4D.

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