The principal axis is also called _______ of the lens.

optical axis

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x-axis

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y-axis

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axis

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Solution

The correct option is B optical axis
The principal axis is also called optical axis of a lens as it passes through the optical centre of the lens.

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The principal axis is also called _______ of the lens.

The correct option is B optical axisThe principal axis is also called optical axis of a lens as it passes through the optical centre of the lens.

The correct option is B optical axis
The principal axis is also called optical axis of a lens as it passes through the optical centre of the lens.