Physics
Draw separate diagrams for the formation of virtual image of an object by
(a) a concave mirror and
(b) a convex mirror.
State the difference of the two images.
Answer
(a) When an object is placed between the pole and focus of a concave mirror, the image is formed behind the mirror. A virtual, erect and enlarged image of the object is formed.
(b) In convex mirror for the object placed at finite distance, the image formed is always virtual, erect, diminished and it is formed between pole and focus of the mirror.
| Sl. No. | Virtual Image of Concave mirror | Virtual Image of Convex mirror |
|---|---|---|
| 1. | Image is enlarged. | Image is diminished and if the object is at infinity then image is diminished to a point. |
| 2. | Image is formed behind the mirror between the pole and focus. | Image is formed between pole and focus. But if the object is at infinity then image is formed at the focus of the mirror. |
Related Questions
Draw a ray diagram to show the formation of image of an object placed between the pole and focus of a concave mirror. State the position, size and nature of the image.
Name the mirror which forms an erect, virtual and enlarged image of an object. What is the position of object relative to the mirror?
Draw a ray diagram to show the formation of the image of an object placed on the principal axis of a convex mirror. State the position, size and nature of the image. What happens to the image as the object is moved away from the mirror?
Name the mirror which always forms an erect and virtual image. What is the size of the image as compared to that of the object?