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प्रश्न
What is light? Define it.
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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
Select the correct alternative.
The natural source of light is
Select the correct alternative.
The luminous body is
What do we call a substance through which we cannot see light? Give an example of such a substance.
What do you understand by candle power?
Tick the correct answer.
Substance which don’t allow light to pass through them,
Answer the following.
Distinguish between transparent, translucent, and opaque objects.
When light passes through a prism, it gets separated into ______ colours.
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.
Velocity of light is greater in denser medium than in rarer medium
