Question

write the lens makers formula and explain the terms in it ?

Answer 1

Using the positive optical sign convention, the lens maker's formula states

1/f = (n-1) (1/R1 - 1/R2)

where f is the focal length, n is the index of refraction, and R1 and R2 are the radii of curvature of the two sides of the lens.




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Answer 2

1/f=(n-1)(1/Ra-1/RB)