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. Which of the thermometers A or B, will show a greater rise in temperature?

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Thermometer A

Thermometer B

Both have the same temperature

None

answer is B.

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Detailed Solution

Thermometer B will show a greater rise in temperature.
If laboratory thermometer A is kept

7 cm

away from the side of the flame. In comparison, a similar thermometer B is kept

7 cm

above the flame of a candle. then thermometer B will show a greater rise in temperature.
Here, we can say that since the hot air rises and thus raises the temperature of the thermometer that is above the flame of a candle. So, thermometer B will indicate a significant temperature rise.

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