(1/f)=(n−1)((1/R_1 )−(1/R_2 )) lense′s maker equation.
when is positive or negative R_1 and R_2 ?
sciencestudent
sciencestudent
sciencestudent
JDamian
JDamian
when lens are concave or convexe
sciencestudent
mr W
0
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