When an incense stick is kept near the mouth of a lit candle, what is the expected direction of smoke flow?
Understand the Problem
The question is asking about the behavior of smoke from an incense stick when placed near a lit candle, specifically focusing on how the smoke interacts with the flame of the candle.
Answer
Smoke flows towards the lit candle and then upwards.
The smoke from an incense stick flows towards the mouth of a lit candle and then rises upwards.
Answer for screen readers
The smoke from an incense stick flows towards the mouth of a lit candle and then rises upwards.
More Information
This is due to convection currents that are created by the heat of the candle. The hot air rises, causing the cooler smoke to flow towards the flame and then rise.
Tips
A common mistake is thinking that the smoke will directly move away from the heat source. Instead, it initially moves towards it and then rises.
Sources
- Study material on Air - Manorama Horizon - manoramahorizon.com
- In which direction does smoke from Incense stick flow? - Doubtnut - doubtnut.com
- Place a candle in a beaker or wide mouthed bottle and light it. Light - Doubtnut - doubtnut.com
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