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Sashank
24/11/2018 0 0

What is Prism?

Prism is uniform transparent refracting medium bounded by two plane surfaces inclined at an angle.

What is an optical centre?

A point on the principal axis, through which, light rays pass on undefeated, is called the optical centre of the lens.

What is the power of a lens?

Power of a lens is the reciprocal if it's focal length.

What is the unit of power of a lens?

Dioptre(D).

 

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