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Flame SCF 18 Near Chawla Lights Ph-7 Mohali 9888949978

22.A thermally insulated rigid container contains an ideal gas heated by a filament of resistance 100Ω through a current of 1A for 5 min then change in internal energy is

(a) 0 kJ (b) 10 kJ

(c) 20 kJ (d) 30 kJ

Answer-d

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PrevPrevious21. Initial pressure and volume of a gas are P and V respectively. First it is expanded isothermally to volume 4V and then compressed adiabatically to volume V. The final pressure of gas will be

Next23. A reversible engine converts one-sixth of the heat input into work. When the temperature of the sink is reduced by 62°C, the efficiency of the engine is doubled. The temperatures of the source and sink areNext

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