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:
A)3 cm from the surface
B)6 cm from the surface
C)12 cm from the surface
D)18 cm from the surface
E)24 cm from the surface

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The Answer of 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:
A)3 cm from the surface
B)6 cm from the surface
C)12 cm from the surface
D)18 cm from the surface
E)24 cm from the surface

A Convex Refracting Surface Has a Radius of 12 Cm