Question

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

Answer 1

Answer: (D)

The ray diagram is shown in figure. Therefore, the image will be real and between C and O.