Question

what is principal axis??​

Answer 1

Answer:

principal axis. noun. the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror. any of three mutually perpendicular axes about which the moment of inertia of a body is maximum.

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Answer 2

Answer:

Principal axis is the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror. any of three mutually perpendicular axes about which the moment of inertia of a body is maximum.

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