Question

• Draw the ray diagram
a ray travelling prallel to the principal
axis strikes a convex surface and passes
from a denser medium to rarer medium​​

Answer 1

Answer:

Ray diagram for a ray travelling parallel to the principal axis strikes convex surface and refracts from rarer to denser medium:

A normal is a line drawn perpendicular to a refracting or reflecting surface.

The point of concurrence of all normals drawn to a surface is called center of curvature.

Principal axis is the imaginary line which passes through pole and center of curvature of the curved surface.

When a ray parallel to principal axis travelling from rarer to denser medium strikes convex surface, it gets refracted and bends towards the normal.