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प्रश्न
The following figure shows a container in which a lighted candle has been kept. The container has two openings, p, and Q. Which way the smoke from an external source placed near P moves when it reaches P and leaves from Q. Give a reason for your answer.
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उत्तर
Smoke is entering into the box from tube Pandas smoke reaches near the candle its temperature increase and smoke become lighter and leaves out from tube Q.
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