Question

Two lenses have exactly the same curvature on both sides, and yet they refract light differently. Which of the following could explain this?A.Lens A and lens B are made from two different materials with different optical properties.B.While the angle of refraction is set by the curvature, whether the light refracts toward or away from the axis is random.C.Lens A was facing with its more curved side facing the incident light, and lens B was turned the other way.D.The curvature of the lenses does not determine how the lenses refract light.

Answer 1

Let's check the formula for a focal length:

`(1)/(f)=(n-1)((1)/(R1)-(1)/(R2)+((n-1)d)/(nR1\cdot R2)`

Since basically the two lenses have the same form, we can conclude that R1,R2 and d are the same. But n ( refractive index) could be different. n depends on the material, so we can conclude that the answer is:

A.

Lens A and lens B are made from two different materials with different optical properties.