Q.
A convex lens is placed with a mirror as shown in figure. If the space between them is filled with water is power will
A) Decrease
B) Increase
C) Remain unchanged
D) Increase or decrease depending on the focal length
Explanation
(a) The power of the given system is a combination for the positive power of the convex lens, negative power of the plano-concave lens of water and zero power of the plane mirror. Clearly, the power of the system decreases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.