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प्रश्न
Explain the following:
Water is heated generally from below.
उत्तर १
Water is heated generally from below because water itself is a bad conductor of heat and the transfer of heat through convection take place vertically upwards
उत्तर २
Water is heated from below because water is heated by process of convection and in process of convection heat always flows in upward direction from downward direction.
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संबंधित प्रश्न
Name the one common unit of temperature. Write their symbols also.
Name two substances which contract on heating.
Name or state the following:
The law which states that pressure remaining constant the volume of a given mass of dry gas is directly proportional to its absolute [Kelvin] temperature.
State three factors affecting evaporation.
A copper wire 10 cm long is heated from 200C to 300C. Find the increase in length of the wire, if coefficient of linear expansion of copper is 1.7 X 10-5oC-1
Explain the following:
In a solid, heat is not transferred by the process of convection.
A thermostat is a device which maintains _____.
