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प्रश्न
Write the names of some cold light-emitting objects.
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उत्तर
Jugnu, firefly.
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संबंधित प्रश्न
Write the names of some transparent objects.
Fill in the blank
A ............. is formed when the path of light is obstructed by an ..............
Write true or false
The stars have no light.
Answer the following.
What is meant by luminous intensity? What is one lumen?
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 |
Describe the pictures.
The path of the light is called as ______.
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?
