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प्रश्न
If an object is placed at a distance of 10 cm in from of a plane mirror, how far would it be from its image?
उत्तर
It will be 20 cm away from its image. This is because the distance of the plane mirror from the object is equal to its distance from the image.
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संबंधित प्रश्न
| Column I | Column II | Column III | |
| 1 | Dispersion | Long-sightedness | Twinkling of stars |
| 2 | Refraction | Splitting of white light into component colours | Convex lens |
| 3 | Hypermetropia | Change in the direction of the ray of light due to change in medium | Spectrum of seven colours |
What is lateral inversion? Explain by giving a suitable example.
What is meant by 'reflection of light'?
A ray of light travelling in air is incident on a rectangular glass block and emerges out into the air from the opposite face. Draw a labelled ray diagram to show the completer path of this ray of light. Mark the two points where the refraction of light takes place. What can you say about the final direction of ray of light?
Water is optically denser than glass.
The speed of light is more in glass than in water.
The refractive index of a transparent medium is always greater than ______.
When light passes from one medium to another the ray gets bent. This property of light is called ______.
The ratio of the sine of the angle of incidence to the sine of ______ is constant.
Twinkling of stars and Mirage are the two phenomena occurring due to refraction.
