Find the radius of curvature of convex surface of a plano convex lens, whose focal length is `0.3 m and mu = 1.5`.

Explanation

Here, `R_1 = oo, R_2 = ?`
`f = 0.3 m, mu = 1.5`
From `(1)/(f)=(mu - 1)((1)/(R_1) - (1)/(R_2)) ,`
`(1)/(0.3) = (1.5 - 1) ((1)/(oo) - (1)/(R_2))`
`-(1)/(R_2) = (1)/(0.3 xx 0.5) = (100)/(15) ,`
`R_2 = -(15)/(100) = -0.15 m`.