Science
Heat
Easy
Question
How does heat energy reach the earth from the sun?
- Convection
- Conductor
- Radiation
- None
The correct answer is: Radiation
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This is a material that transfer heat energy easily.
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Find the external work done by the system in kcal, when 20 kcal of heat is supplied to the system and the increase in the internal energy is 8400 J (J=4200J/kcal) ?
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Temperature of an ideal gas is 300K. The final temperature of the gas when its volume changes from V to 2V in the process P=α V(here α is a positive constant) is
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two bodies of equal masses are heated at a uniform rate under identical conditions. The change in temperature in the two cases is shown graphically. The ratio of their specific heats in the solid state is
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One mole of an ideal monoatomic gas at temperature T0 expands slowly according to the law 
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p-T diagram of one mole of an ideal monatomic gas is shown. Processes AB and CD are adiabatic. Work done in the complete cycle is
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