Answers

2015-10-06T23:00:52+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Lens maker formula is the formula for the manufacturer of lenses.  Given the specification of the lenses in terms of power (long distance and short distance), they make the lense using the proper combination of glass, with appropriate radii of curvature.

 1/f  = (μ-1) [1/R1 - 1/R2]

this is the formula,  f = focal length,  1/f = power of lens,  R1 and R2 are radii of curvature.  μ = refractive index of glass used.  R1, R2 and f are quantities, positive in the direction of light rays.

1 5 1
2015-10-08T23:57:47+05:30
It is important for making the lenses and it is,
1/f=(n2-n1/n1)(1/r1-1/r2)
0