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How can you increase the sensitivity of a thermometer?
Chapter: [5] Heat and Energy
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Differentiate between clinical thermometer and laboratory thermometer.
Chapter: [5] Heat and Energy
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Complete the following sentence:
SI unit of temperature is ______
Chapter: [5] Heat and Energy
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A glass stopper has got stuck in the neck of a bottle. How can you remove the stopper without breaking the bottle?
Chapter: [5] Heat and Energy
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What is meant by apparent expansion and real expansion of a liquid?
Chapter: [5] Heat and Energy
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Can we fuse an iron wire in a glass rod? Give reason to your answer.
Chapter: [5] Heat and Energy
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Suggest some suitable way to remove a tight glass stopper from a bottle.
Chapter: [5] Heat and Energy
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State three factors on which the increase in the length of a rod depends, on heating.
Chapter: [5] Heat and Energy
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The following figure shows a copper washer. Explain, giving reasons, whether the following characteristics of the washer increase, decrease, or remain the same when it is heated.
(a) Internal diameter
(b) Volume
(c) Mass
(d) Density
(e) External diameter
Chapter: [5] Heat and Energy
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Name the instrument used for measuring the temperature of a body.
Chapter: [5] Heat and Energy
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What is the principle used in a thermometer?
Chapter: [5] Heat and Energy
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Who designed the first thermometer?
Chapter: [5] Heat and Energy
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What do you mean by calibration of a thermometer?
Chapter: [5] Heat and Energy
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What is a clinical thermometer?
Chapter: [5] Heat and Energy
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State three properties of a liquid which make it suitable to be used in a thermometer.
Chapter: [5] Heat and Energy
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State two disadvantages of using mercury as a thermometric liquid.
Chapter: [5] Heat and Energy
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The body temperature of a healthy person is 98.4°F. Find the corresponding temperature on the Celsius scale.
Chapter: [5] Heat and Energy
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The temperature of a body rises through 1°C. What is the corresponding rise on an absolute scale?
Chapter: [5] Heat and Energy
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Name the temperature scale used in the SI system.
Chapter: [5] Heat and Energy
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How is the size of a degree defined on the Celsius scale?
Chapter: [5] Heat and Energy
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