Question

(Radius of curvature of a lens of 30 cm focal length is 10 cm. If both surfa3ce of lens are equally spherical
then refractive index of lens will be.)
(a) 1.5
(b) 1.66
(c) 1.33
(d)3
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Answer 1

Answer:

options c is correct answer apply it

Answer 2

here your physics answer no d.