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प्रश्न
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उत्तर
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संबंधित प्रश्न
Name the three modes of transfer of heat.
Draw a labelled diagram of a thermo flask. Explain how the transfer of heat by conduction, convection and radiation is reduced to a minimum in it.
Find the odd one out and give its explanation.
1 calorie is 4.81 joules.
Why does the bottom of a lake not freeze in severe winter though the surface is all frozen?
We feel the heat on our body when the ______ shines.
______ energy can be generated by the burning of fuels like coal, wood, charcoal, gasoline, etc.
Analogy:
Movement of molecules:: Heat.
Heat energy:: ______.
How can heat energy be generated?
In the arrangements A and B shown in the following figure, pins P and Q are fixed to a metal loop and an iron rod with the help of wax. In which case are both the pins likely to fall at different times? Explain.

