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

Answer 1

heat rises.
(as the gas (air) heats up from the flame it expands losing density so it rises :)

Answer 2

the answer is B because hot air will only rise up because of convection

Answer 3

Thermometers B will show a greater rise in temperature because hot air rises up from candle which burns due to convection.