the focal length of convex length is equal to the radius of curvature of eaither face , what is the refractive index of the material of the lens
Answers
Answered by
1
Answer:
focal length of a lens is given by:
1/f = (u-1) (1/r1 + 1/r2)
by the iven information we have got
r1 = r2= f = r
1/r = (u -1) (1/r + 1/r)
or
u = 1/2 + 1
= 3/2
= 1.5
Explanation:
Similar questions