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 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                                                [IIT-JEE 1998]

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

Correct Answer: D

Solution :

                   From the following figures it is clear that real image (I) will be formed between C and O