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प्रश्न
What do we call a body that shines on its own?
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उत्तर
The bodies that shine on their own or which themselves emit their own light are called luminous bodies.
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संबंधित प्रश्न
Write true or false of the following statement.
The moon is self-luminous.
Name two natural sources of light.
Is the moon a luminous object?
What do you understand by candle power?
Write true or false
The earth has its own light.
Write true or false
Opaque objects do not allow light to pass through them.
________ objects allow all the light to pass through them.
Mirrors change the direction of light that fall on them.
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 |
Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli are, respectively
