Question

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

Answer 1

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.

Answer 2

Answer:

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.