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प्रश्न
Name any four man made sources of light.
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उत्तर
1. An electric bulb
2. Candle
3. An oil lamp
4. A torch
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संबंधित प्रश्न
Write true or false of the following statement.
A shadow is formed because light travels in a straight-line path.
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| (b) Firefly | (2) Inverted image |
| (c) Pinhole camera | (3) Reflection |
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