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प्रश्न
Fill in the blank
Speed of light in vacuum is .................
रिकाम्या जागा भरा
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उत्तर
Speed of light in vacuum is 300000 km/sec
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संबंधित प्रश्न
Fill in the blank.
Light gives us the sensation of ................
How does light make an object visible?
Why do objects in a room become visible even if sunlight does not enter it?
Tick the correct answer.
The natural source of light is
Tick the correct answer
Glass is
Write true or false
The moon has its own light.
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 |
Write about two everyday situations that tell you that light travels in a straight line.
Describe the pictures.
