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प्रश्न
Observe the picture given in the following figure. A sheet of some material is placed at position ‘P’, and still the patch of light is obtained on the screen. What is the type of material of this sheet?
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उत्तर
Sheet P must be of transparent material as it allows light to pass through it.
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संबंधित प्रश्न
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Give one natural source of light.
What is an incandescent body? Give example.
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Match the following.
| 1. | Light source | Glass |
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| ________ | _________ | _________ |
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| ______ | ______ | ______ |
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