What is Lens

It is a transparent glass

it is bound by 2 spherical surfaces

Hence, if 2 glass spheres are joined together, they form a lens


What are Different Types of lens

They are of 2 types


Concave Lens

It is thin in center but thicker at the edges


Convex Lens

It is thick in middle but thinner at the edges


Real life images of Concave and Convex Lens look like




NCERT Question 1 - Which one of the following materials cannot be used to make a lens?
(a) Water (b) Glass (c) Plastic (d) Clay

View Answer

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Maninder Singh's photo - Co-founder, Teachoo

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo