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प्रश्न
Why are infinite images not seen when two plane mirrors are facing each other?
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उत्तर
Infinite images are not seen when two plane mirrors are facing each other because:
- After every successive reflection, some amount of light energy is absorbed. Thus luminosity of the image goes on decreasing, till they are no longer visible.
- As the distance of images from the eye goes on increasing, it is unable to resolve far off images.
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संबंधित प्रश्न
David is observing his image in a plane mirror. The distance between the mirror and his image is 4 m. If he moves 1 m towards the mirror, then the distance between David and his image will be ______.
Fill in the blank
We are able to see the objects around us due to _________, reflection.
What do you understand by the Light?
State two advantages and two disadvantages of the reflecting periscope.
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.
Match the following:
| 1. | Vegetable oil | a. | Transparent |
| 2. | Glass | b. | Translucent |
| 3. | Wood | c. | Waterproof |
| 4. | Aluminum foil | d. | Opaque |
Match the following:
| 1. | Rubber | a. | Erect |
| 2. | Greased paper | b. | Inverted |
| 3. | Real image | c. | Opaque medium |
| 4. | Virtual image | d. | Translucent medium |
Play with a mirror
Write your name with a sketch pen on a thin sheet of paper, polythene or glass. Read your name on the sheet while standing in front of a plane mirror. Now look at your image in the mirror.
