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प्रश्न
Why is it advised not to hold the thermometer by its bulb while reading it?
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उत्तर
It is advised not to hold the thermometer by its bulb while reading it because on holding a thermometer by its bulb, the mercury in the bulb expands due to our body temperature and gives a false reading.
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संबंधित प्रश्न
Mercury is often used in laboratory thermometers because it ______.
Heat energy transfer from ______ to ______.
Draw the diagram of a clinical thermometer and label its parts.
All clinical thermometers have a ______ that prevents mercury from flowing back into the bulb.
A clinical thermometer indicates temperatures from a minimum of ______ °F to a ______ maximum of °F.
Before use, the mercury level in clinical thermometer should be below ______.
Mention any two precautions to be followed while using a clinical thermometer.
Four arrangements to measure temperature of ice in beaker with laboratory thermometer are shown in the following figure (a, b, c and d). Which one of them shows the correct arrangement for accurate measurement of temperature?
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 following figure.
Which of the thermometers, A or B, will show a greater rise in temperature? Give reason for your answer.
How does a clinical thermometer differ from the thermometer used in the laboratory?
