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1. Question4 points
A Carnot engine working between 300 K and 400 K has 800 J of useful work. The amount of heat energy supplied to the engine from the source is [Karnataka CET 2016]Correct
2. Question4 points
One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure,
The change in internal energy of the gas during the transition is [AIPMT 2015]Correct
3. Question4 points
The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is –20°C, the temperature of the surroundings to which it rejects heat is [AIPMT 2015]Correct
4. Question4 points
Which statement is incorrect? [AIEEE 2002]Correct
5. Question4 points
An ideal gas heat engine operates in a Carnot cycle between 227ºC and 127ºC. It absorbs 6 kcal at the higher temperature. The amount of heat (in kcal) converted into work is equal to [CBSE AIPMT 2003]Correct