State and explain with proper diagram th...

State and explain with proper diagram the rules to draw ray diagrams of convex lens.

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i. Rule I: When the incident ray is parallel to the principal axis, the refracted ray passes through the principal focus.

ii. Rule II: When the incident ray passes through the principal focus, the refracted ray is parallel to the principal axis.

iii. Rule III: When the incident ray passes through the optical centre of the lens, it passes without changing its direction.

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