Refraction of light by spherical lenses Flashcards
1
Q
Which lens is thick at the centre and thin at the edges
A
Convex lens also know as converging mirror
2
Q
Which lens is thin at the centre and thick at the edges
A
Concave lens also know as diverging mirror
3
Q
What is the optical centre of a lens
A
It is the centre point of lens
4
Q
What is the power of lens
A
The power of lens is a measure of the degree of convergence or divergence of light rays falling on it
