Question

What happens to a light ray passing through the center of a lens?

Answer 1

any ray passing through the optic centre emerges out without causing refraction (bending) and passes in the same direction

Answer 2

here is the correct answer

Answer 3

In theory, the one going through the exact centre will not change direction.

However, because the lens will have some thickness, a light ray that arrives just a bit off the centre will be refracted just as it enters the glass, pass through the centre, then get refracted back on a parallel track as it comes out of the glass.

If will be in the same direction as before but not exactly on the continuation of it pre-entry line. It will be on a parallel line, offset by a tiny amount.

Answer 4

The key in the question is the "not parallel" part. A light ray that travels along the centerline of a lens, convex or not, doesn't bend because it meets both surfaces of the lens at a right angle. Unless the lens has an index of refraction equal to the medium surrounding it, that is the ONLY ray for which this is true. Figure your light paths according to the surface angle, just like any other place on the lens.

Answer 5

it depends on which lens you are using if u are using convex lens(converging lens) When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus. And if concave lens(diverging lens), meaning that it spreads out light rays that have been refracted through it