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प्रश्न
Does the flame of a gas stove emit light?
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उत्तर
Any burning thing emit light. The intensity of the light may not be the same. A flame of a gas stove emits light.
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संबंधित प्रश्न
Match the following
| (a). A light ray passes from air to glass | (1) . speeds up |
| (b). A light ray passes from glass to water | (2). reflects red light |
| (c). Virtual image | (3). primary colours |
| (d). Red rose | (4). plane mirror |
| (e). Red, green, and blue | (5). slows down |
How do we see objects around us ?
Select the correct alternative.
The luminous body is
What do we call a substance through which light passes? Give an example of such a substance.
From among the following objects, list out the opaque, translucent, and transparent bodies in the space provided below:
A glass strip, an ordinary paper, greased paper, tracing paper, polythene sheet, wooden piece, steel plate, glycerine, kerosene oil, mustard oil, grounded glass, stone, book, water, and milk.
Opaque Transparent Translucent
What do you understand by candle power?
Write true or false
The earth has its own light.
Mirrors change the direction of light that fall on them.
In going from a rarer to denser medium, the ray of light bends ______.
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 |
