Question

a ray travelling parallel to the principal axis strikes a convex surface and passes from denser medium to rarer medium ​

Answer 1

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.

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Answer 2

Answer:

The procedure are showed below :

Explanation:

Ray diagram for a ray traveling parallel to the principal axis strikes the convex surface and refracts from rarer to the 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 the center of curvature.
• Principal axis is the imaginary line that passes through the pole and center of curvature of the curved surface.
• When a ray parallel to the principal axis traveling from rarer to denser medium strikes a convex surface, it gets refracted and bends towards the normal.