Physics

Problem

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