Question

why a ray of light passing through the optical center of a convex lens goes staight after refraction through the lens. give resion?

Answer 1

Actually the same happens when the ray passes through optical centre. This can be observed in a thick lens. In thin lenses the perpendicular distance between extended incident ray and extended emergent ray is negligible. So we can say that light ray passes through optical centre without deviation.Oct 27, 2015

Answer 2

Answer:

1. The portion of a lens near the optical centre is like a very thin slab of glass.

2. Hence, a ray of light passing through the optical centre of a convex lens goes straight after refraction through the lens.

Explanation:

Optical Centre :

1. The point inside a lens on the principle axis, through which light rays pass without changing their path is called the optical centre of a lens.

2. It is denoted by O.