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प्रश्न
You may have noticed that a few sharp jerks are given to a clinical thermometer before using it. Why is it done so?
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उत्तर
A clinical thermometer has a kink that prevents immediate backflow of the mercury from the tube to the bulb, thus allowing us to read the temperature conveniently. This is the reason why we give a jerk to the thermometer before taking a new reading. The jerk positions the mercury below the kink into the bulb.
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संबंधित प्रश्न
A thermometer is used to measure ______.
State the similarities and differences between the laboratory thermometer and the clinical thermometer
Digital thermometers do not use ______.
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.
Mention the use of laboratory thermometers.
We are advised to avoid keeping the clinical thermometer in the sun or near a flame. Why?
Write a note on the laboratory thermometer.
Explain how do you determine the temperature of hot water using a laboratory thermometer?
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.
