Question

A laboratory thermometer A is kept 7 cm away on the side of the flame while a similar thermometer B is kept 7 cm above the flame of a candle as shown in the figure below.

Which of the thermometers, A or B, will show a greater rise in temperature? Give reason for your answer.

  • Heat CBSE Class 7
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Answer

Thermometer B will show a greater rise in temperature because hot air rises up or air on the top of the candle flame is getting heated by convection.

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