Q. A concave mirror is placed on a horizontal table with its axis directed vertically upwards. Let $O$ be the pole of the mirror and $C$ its centre of curvature. A point object is placed at $C$. It has a real image, also located at $C$. If the mirror is now filled with water, the image will be
A) Real and will remain at $C$
B) Real, and located at a point between $C$ and $\infty$
C) Virtual and located at a point between $C$ and $O$
D) Real, and located at a point between $C$ and $O$
Explanation
(d) From the following figures it is clear that real image $(I)$ will be formed between $C$ and $O$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.