Question #38958

A parallel beam of monochromatic light falls on a combination of a convex lens and a concave lens of focal lengths 15 cm and 5 cm respectively.What is the distance between the two lenses to obtain a parallel beam of light from the concave lens?

options are :

a) 20 cm b) 3 cm c) 10 cm d) 45 cm

options are :

a) 20 cm b) 3 cm c) 10 cm d) 45 cm

Expert's answer

## Comments

## Leave a comment