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प्रश्न
Why in cold countries windows have two glass panes with a thin layer
Of air between them?
टीपा लिहा
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उत्तर
In cold countries, windows are provided with two glass panes because in between these two glass panes, a thin layer of air is present: air being a bad conductor obstructs the conduction of heat from the room to outside.
shaalaa.com
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