question_answer

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 center 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 O.

C) virtual, and located at a point between C and O

D) real, and located at a point between C and O