Advertisements
Advertisements
Question
You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from
Options
both concave lens and convex lens.
both concave mirror and convex mirror.
both concave mirror and convex lens.
both convex mirror and concave lens.
Advertisements
Solution
both concave mirror and convex lens.
Explanation:
Both concave mirror and convex lens. Both concave mirror and convex lens can form inverted and real images of an object.
APPEARS IN
RELATED QUESTIONS
With the help of an appropriate ray diagram, state the sign conventions for reflection by a spherical mirror.
Draw ray diagrams to show the principal focus of a concave mirror.
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed, so that a sharp focused image can be obtained? Find the size and the nature of the image.
For what position of an object, a real and diminished image is formed by a concave mirror?
Draw ray-diagrams to show the formation of images when the object is places in front of a concave mirror (converging mirror):
(i) between its pole and focus
(ii) between its centre of curvature and focus
In the concave reflector of a torch, the bulb is placed:
(a) between the pole and focus of reflector
(b) at the focus of reflector
(c) between focus and centre of curvature of reflector
(d) at the centre of curvature of reflector
An object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm.
Calculate the image distance.
Radius of curvature of a spherical mirror is ............. its focal length.
Write the uses of the concave mirror.
A student took three concave mirrors of different focal lengths and performed the experiment to see the image formation by placing an object at different distance with these mirrors as shown in the following table.
| Case No. | Object-distance | Focal length |
| I | 45 cm | 20 cm |
| II | 30 cm | 15 cm |
| III | 20 cm | 30 cm |
Now answer the following questions:
(a) List two properties of the image formed in Case I.
(b) In which one of the cases given in the table, the mirror will form real image of same size and why?
(c) Name the type of mirror used by dentists. Given reason why do they use such type of mirrors.
OR
(c) Look at the table and identify the situation (object distance and focal length) which resembles the situation in which concave mirrors are used as shaving mirrors? Draw a ray diagram to show the image formation in this case.
