NEET Physics Ray Optics and Optical Instruments Questions Solved


There  is an equi-convex glass lens with radius of each face as R and μga=32 and μwa=43. If there is water in object space and air in image space, then the focal length is

(a)   2R                                      (b)   R

(c)   3 R/2                                  (d)  R2

     

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