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प्रश्न
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संबंधित प्रश्न
Write down the temperature of upper fixed point,, on the Fahrenheit scale.
Name two substances which contract on heating.
A body radiates out 300 calories of heat energy. How much heat energy is radiated out by the body in joules?
Write the SI unit of coefficient of cubical expansion.
State one use of each of the following type of thermometer:
Clinical thermometer
Give a scientific reason for the following:
In winter the birds fluff up their feathers.
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.
SI unit of temperature is ______.
______ determines the direction of the flow of heat.
Temperature measures the ______ kinetic energy of molecules.
