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प्रश्न
In the following diagram. MM' is a concave mirror and AB is an object. Draw on your answer-sheet a ray diagram to show the formation of image of this object.
उत्तर
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संबंधित प्रश्न
Name the type of mirror used in the following situation:
Headlights of a car
Support your answer with reason.
Out of convex mirror and concave mirror, whose focus is situated behind the mirror?
What kind of mirror can have a focal length of, −20 cm?
At what distance from a concave mirror of focal length 10 cm should an object be placed so that:
its virtual image is formed 20 cm from the mirror?
Draw and complete the following diagrams to show what happens to the beams of light as they enter the glass block and then leave it:
How can a concave mirror be used to obtain a virtual image of an object? Draw a diagram to illustrate your answer.
Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image
You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from
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.
