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प्रश्न
Do all substances expand on heating? Give examples.
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उत्तर
Not all substances expand on heating. Some examples of substances which do not expand on heating are plastics, polythene and rubber.
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संबंधित प्रश्न
Who is telling the truth?
Heat flows from an object at higher temperature to an object at lower temperature.
Name the S.I. unit of heat and how is it related to the unit calorie?
State one use of each of the following type of thermometer:
Laboratory thermometer
What is temperature?
Assertion (A): 0 °C = 273.16 K. For our convenience we take it as 273 K after rounding off the decimal.
Reason (R): To convert a temperature on the Celsius scale we have to add 273 to the given temperature.
Temperature is a measure of the average kinetic energy of molecules.
Give reasons why –
we wear woolen clothes in winter
