spherical convex surface separates object and image space of refractive index 1 and 4/3 respectively. If radius of curvature of the surface is 0.1 m, its power is :
Answer & explanation
Correct answer: option 1
For a single spherical surface
$\frac{μ_2}{f}=\frac{μ_2-μ_1}{R}$
$⇒P=\frac{μ_2-μ_1}{μ_2R}$
putting the values, P = 2.5 D.