A plane convex lens has a focal length 12cm and is made up of glass with refractive index 1.5. Find the radius of curvature of its curved side.

Explanation

To find the radius of curvature of the curved side of a plane convex lens with a focal length of 12 cm and a refractive index of 1.5, we can use the lens maker's formula. Here’s a step-by-step solution:

### Step 1: Understand the Lens Maker's Formula
The lens maker's formula relates the focal length (f) of a lens to the radii of curvature (R1 and R2) of its two surfaces and the refractive indices of the lens material (μ2) and the surrounding medium (μ1). The formula is given by:

\[ \frac{1}{f} = \left(\frac{\mu_2}{\mu_1} - 1\right) \left(\frac{1}{R_1} - \frac{1}{R_2}\right) \]
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