A normal is an imaginary straight line __________ to the refracting surface.

parallel

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perpendicular

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inclined

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coplanar

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Solution

The correct option is B perpendicular
A normal is an imaginary straight line perpendicular to the refracting surface.

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A normal is an imaginary straight line __________ to the refracting surface.

The correct option is B perpendicularA normal is an imaginary straight line perpendicular to the refracting surface.

The correct option is B perpendicular
A normal is an imaginary straight line perpendicular to the refracting surface.