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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
Name two natural sources of light.
Differentiate between the luminous and non-luminous bodies. Give two examples of each.
What is a transparent medium? Give two examples.
Why do objects in a room become visible even if sunlight does not enter it?
Write true or false
The earth has its own light.
Answer the following.
Distinguish between transparent, translucent, and opaque objects.
Answer the following.
Differentiate between luminous and non-Luminous objects.
Match the following.
| Group A | Group B |
| (a) Mirror | (1) Non-luminous |
| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
| (d) Moon | (4) Luminous |
State Rayleigh’s law of scattering.
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?
