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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
The body temperature of a healthy man is;
A clinical thermometer is not used to measure the temperature of air, why?
A clinical thermometer is calibrated from to ______.
Before use, the mercury level in clinical thermometer should be below ______.
Mercury is a poor conductor of heat.
Digital thermometers are mainly used to take body temperature.
What is the freezing point of alcohol?
Explains the properties of mercury.
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.
You may have noticed that a few sharp jerks are given to a clinical thermometer before using it. Why is it done so?
