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Sashank

23/11/2018 0 0

What are the types of mirror?

Concave and convex

What are the types of lense?

Convex and concave

What is the optical centre of lense?

It is the centre of a lense

What is the principal axis?

A line which passes through the optical centre of two lense is called principal axis.

What is the power of lense?

Dioptres

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