Q9Very short answer
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 Figure 4.5. (B) (A) Fig. 4.5 Which of the thermometers, A or B, will show a greater rise in temperature? Give reason for your answer.
This question refers to a figure in the original PDF.
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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.