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प्रश्न
Answer the following.
What is light?
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उत्तर
Light is a form of Energy i.e. The external physical cause that affects our eye to produce the sensation of vision.
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संबंधित प्रश्न
Write true or false of the following statement.
We can see an object through an opaque medium.
Write true or false of the following statement.
Light travels in a straight-line path.
Write true or false
The stars have no light.
Answer the following.
Name some sources of light that are not hot.
_______ is the natural source that stimulates sight and makes things visible.
Write about two everyday situations that tell you that light travels in a straight line.
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 the energy of incident beam and the scattered beam is the same, then the scattering of light is called as ______ scattering.
Amount of light entering into the eye is controlled by ______.
State Rayleigh’s law of scattering.
