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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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