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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.
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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