Question

Write the laws of refraction through spherical lens.

Answer 1

Answer:

Images formed by spherical mirrors: rules for drawing a ray diagram.

1. if an incident ray is parallel to the principal axis then the reflected ray passes through the principal focus.
2. (1) if an incident ray passes through the principal focus of a concave mirror, the reflected ray is parallel to the principal axis.

(2) if an incident ray is directed towards the principal focus of a convex mirror, the reflected ray is parallel to the principal axis.

3. (1) if an incident ray passes through the centre of curvature of a concave mirror, the reflected ray traces the same path back.

(2) if an incident ray is towards the centre of curvature of a convex mirror, the reflected ray traces the same path back.

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