A convex refracting surface has a radius of 12 cm. Light is incident in air (n = 1) and refracted into a medium with an index of refraction of 2. Light incident parallel to the central axis is focused at a point: Group of answer choices 3 cm from the surface 6 cm from the surface 24 cm from the surface 12 cm from the surface 18 cm from the surface

24cm from the surface

Explanation:

Equation for refraction

n2/v- n1/u = n2-n1/R

= u = infinity ( parallel)

2/v= (2-1)/R

V = 2R

V= 24cm

b.

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