Question

A ray of light passing through a point situated on the principal axis of a lens goes straight

t without suffering any deviation. The point is called the

a. Principal focus b. optical centre c. pole d. centre of curvature​

Answer 1

Explanation:

b. optical centre. the light passing through optical centre goes straight and doesn't deviate.

Answer 2

a. Principal focus b. optical centre c. pole d. centre of curvature

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