Physics, asked by jatinder54, 5 months ago

the distance between the optical centre and the principal focus of a lens is called its

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Answered by JBJ919

Answer:

That is why, a lens has two foci. They are at equal distance from the optical centre. Focal length of a convex lens: The distance between the optical centre and principal focus of a lens is called focal length. Focal length of a lens depends on the refractive index of the glass and its curvature.

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