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Question
A laboratory thermometer A is kept 7 cm away from the side of the flame while a similar thermometer B is kept 7 cm above the flame of a candle as shown in Figure 4.5.
Which of the thermometers, A or B, will show a greater rise in temperature? Give a reason for your answer.
Solution
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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