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Question
What is a spherical mirror? Distinguish between a concave mirror and a convex mirror.
Solution
A spherical mirror is a curved surface in which the inner or outer surface has the capability to reflect light.
Difference between convex and concave mirror are as follows:
| Convex Mirror | Concave Mirror |
| 1.In a convex mirror, reflection of light takes place on the bulged-out surface. |
1.In a concave mirror, reflection of light takes place on the bent surface . |
| 2. Convex mirror has virtual focus. | 2. Concave mirror has real focus. |
| 3. Convex mirror diverges the rays of light incident on it. | 3. Concave mirror converges the rays of light incident on it. |
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RELATED QUESTIONS
List four characteristics of the images formed by plane mirrors.
What is the minimum number of rays required for locating the image formed by a concave mirror for an object? Draw a ray diagram to show the formation of a virtual image by a concave mirror.
The angle of incidence for of light passing through the centre of curvature of a concave mirror is:
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Answer the following question:
An object is placed at a distance of 30 cm from a concave lens of focal length 30 cm.
(i) Use the lens formula to determine the distance of the image from the lens.
(ii) List four characteristics of the image (nature, position, size, erect/inverted) in this case.
(iii) Draw a labelled diagram to justify your answer of the part (ii)
In which of the following, the image of an object placed at infinity will be highly diminished and point sized?
