The distance between the optical centre of lens and the focal point is called :

Reflective index

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Focal length

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Radius of curvature

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Plane of incidence

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Solution

The correct option is A Focal length
Distance between optical centre and focal point of a lens is called focal length.

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The distance between the optical centre of lens and the focal point is called :

The correct option is A Focal lengthDistance between optical centre and focal point of a lens is called focal length.

The correct option is A Focal length
Distance between optical centre and focal point of a lens is called focal length.