Question

Sanjaybhai has two types of lens. He does not know which one is a convex lens and

which is a concave lens. Give him some idea to identify the lens. ​

Answer 1

Answer :-

there are two types of lenses

1)concave lense

2)convex lense

Explanation :-

1)concave lenses : a lense made by joining the parts of two spherical surfaces that is thinner in the middle than at the edges . It diverges the in incident rays away from its principal axis.

2)convex lenses : a lense made by joining the part of two spherical surfaces that is thicker In the middle edges . it converges the incident rays toward its principle axis.

I hope it helps