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प्रश्न
What happens to light when it gets dispersed? Give an example.
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उत्तर
Light is splitted into its constituent colours, when it gets dispersed, e.g. Rainbow formation is due to the dispersion of white light after passing through water droplets.
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संबंधित प्रश्न
Fill in the blank.
Light gives us the sensation of ................
Select the correct alternative.
The luminous body is
Fill in the blank
Speed of light in vacuum is .................
Answer the following.
List four natural sources of light.
Answer the following.
Write down five man-made sources of light.
Answer the following.
What is meant by luminous intensity? What is one lumen?
Match the following.
| Group A | Group B |
| (a) Mirror | (1) Non-luminous |
| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
| (d) Moon | (4) Luminous |
The angle of deviation of light ray in a prism depends on the angle of ______.
Match the following.
| 1. | Ratio of height of image to height of object. | Concave mirror |
| 2. | Used in hairpin bends in mountains. | Total internal reflection |
| 3. | Coin inside water appearing slightly raised. | Magnification |
| 4. | Mirage | Convex mirror |
| 5. | Used as Dentist’s mirror. | Refraction |
If VB, VG, VR be the velocity of blue, green, and red light respectively in a glass prism, then which of the following statement gives the correct relation?
