Question

A point source gives out monochromatic light. A convex lens is used to forms a real image of this point object. Then, the optical path from real objects to real images

• A. are equal for all rays.
• B. are larger for paraxial rays than for marginal rays.
• C. are smaller for paraxial rays than for marginal rays.
• D. are equal or unequal depending on $f$ which is the focal length of the lens.

Answer 1

The correct option is A are equal for all rays.

it is same for all rays as the light is monochromatic
option $A$ is correct