A concave mirror is placed on a horizontal table

PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction

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 (1) real, and will remain at

C

. (2) real, and located at a point between

C

and

\infty

. (3) virtual, and located at a point between

C

and

O

. (4) real, and located at a point between

C

and

O