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प्रश्न
Select the correct alternative.
The natural source of light is
पर्याय
candle flame
electric lamp
sun
kerosene lamp
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उत्तर
sun
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संबंधित प्रश्न
What do we call a substance through which light passes? Give an example of such a substance.
Name any four man made sources of light.
Write the names of some cold light-emitting objects.
Tick the correct answer.
Light causes
Answer the following.
Write down five man-made sources of light.
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 |
Amount of light entering into the eye is controlled by ______.
State Rayleigh’s law of scattering.
Light is a form of energy and it travels in a straight line.
Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the shirts in the image?
