in lens maker formula does an extra term of (n-1)d/n*r1*r2 appear?If yes, why?

Asked by tyagishrey | 13th Jun, 2011, 02:07: AM

Expert Answer:

Plz clarify what quantity does the symbol d represent in your question. 
 
But otherwise lens maker's formula is given by.
 
 
 
where f = focal length
         mu = refractive index of lens with respect to outer medium.
 
R1 and R2 are the radius of curvature of two curved sides of the lens.

Answered by  | 13th Jun, 2011, 10:53: AM

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