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प्रश्न
State three main characteristics of a thermometric substance.
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उत्तर
The main characteristics of the thermometric substances are
(a). The substance should have a high coefficient of expansion so that it is sensitive to the smallest change in temperature
(b). The substance should have uniform expansion all over its entire volume
(c). The substance should have minimum specific heat so that it absorbs minimum heat from the body under measurement.
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संबंधित प्रश्न
Fill in the blank
The temperature of a normal human body is ________.
What is the Fahrenheit scale of temperature ?
Convert 5°F to the Celsius scale.
Why does a piece of ice when touched with hands appear cold?
Define coefficient of volume expansion.
Why does a substance expand on heating?
The hot metal ball is suspended from a string in a metal box as shown in the following figure
(i) What are the ways in which the ball loses heat
(ii) Which side of the box will be the hottest and which the least hot after some time? Explain.
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
Explain the following effects of heat.
Change in temperature
