Draw any three ray diagrams to show how the size and nature of the image of an object change when it moves from centre of curvature of concave mirror towards the pole of the mirror.
Dear Student!!
I. When the object is at infinity.
II. When the object is behind the centre of curvature.
III. When the object is at the centre of curvature.
IV. When the object is between the centre of curvature (C) and focus (F).
V. When the object is at focus (F).
VI. When the object is placed between the focus (F) and the pole (P).
The discussion can be summarized in the table given below:
Object position | Image position | Size of image | Nature of image |
At infinity | Focus (F) | Point sized | Real |
Beyond C | Between F and C | Small | Real and inverted |
At C | At C | Same as that of the object | Real and inverted |
Between C and F | Behind C | Enlarged | Real and inverted |
At F | At infinity | Dear Studentghly enlarged | Real and inverted |
Between F and P | Behind mirror | Enlarged | Virtual and erect |
Regards