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 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
Updated On: May 29, 2023
- real and will remain at C
- real and located at a point between C and $8$
- virtual and located at a point between C and O
- real and located at a point between C and O
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The Correct Option is D
Solution and Explanation
The ray diagram is shown in figure. Therefore, the image
will be real and between C and O.
will be real and between C and O.
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Concepts Used:
Spherical Mirrors
A spherical mirror is a mirror which has been cut out of a spherical surface.
There are two kinds of spherical mirrors:
- Convex Mirror
- Concave Mirror
Concave Mirror
Concave mirrors are also called converging mirrors, because in these types of mirrors, light rays converge at a point after impact and reflect back from the reflective surface of the mirror.
Convex Mirror
The convex mirror has a reflective surface that is curved outward. Regardless of the distance between the subject and the mirrors, these mirrors are "always" virtual, upright and reduced.