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Find the radius of curvature of convex s...

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

Text Solution

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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`
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