(1/f)=(n−1)((1/R_1 )−(1/R_2 )) lense′s maker equation. when is positive or negative R_1 and R


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Question Number 181256 by sciencestudent last updated on 23/Nov/22

$\frac{1}{f} = (n - 1) (\frac{1}{R_{1}} - \frac{1}{R_{2}}) {l e n s e}^{'} s m a k e r e q u a t i o n .$ $w h e n i s p o s i t i v e o r n e g a t i v e R_{1} a n d R_{2} ?$
Commented by sciencestudent last updated on 24/Nov/22

$t h a n k s m y h e a r t!$
Commented by sciencestudent last updated on 24/Nov/22

$a r e t h e s e r i g h t ?$
Commented by sciencestudent last updated on 24/Nov/22

Commented by JDamian last updated on 24/Nov/22

$w h y h a v e y o u n o t s e a r c h e d$ $i n g o o g l e o r w k i p e d i a ?$
Commented by JDamian last updated on 23/Nov/22
when lens are concave or convexe
Commented by sciencestudent last updated on 23/Nov/22

$P l e a s e a n s m r W!$
Commented by mr W last updated on 23/Nov/22

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