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 as shown. Which of the thermometers A or B will show a greater rise in temperature? Give reason.
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Answer: thermometer B
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The temperature rise in thermometer b will be greater.
Explanation:
- this is because the rise in temperature of the thermometer will depend on the amount of hot air which is encountered by the laboratory thermometer. The hot air being less denser rises up.
- As a result of this the thermometer which is kept above the flame will encounter more amount of heated air and as a result of this the temperature will rise faster as compared to the other thermometer
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