Physics question and answers for February 21, 2024
- Q Question 7 The temperature dependence of the resistance of a non linear resistor is investigated in a laboratory having constant ambient temperature To 20 C As the temperature is raised...
- Q An ideal gas expands isothermally from a volume V to V and then compressed to original volume V adiabatically Initial pressure is P and final pressure is P3 The total...
- Q 7 10 An incompressible liquid flows through a horizontal tube as shown in the figure 7 78 Then the velocity v of the fluid is A meter A 3 0...
- Q A heat engine uses one mole of an ideal monatomic gas as a working substance The engine can follow either cycle A or cycle B in the diagram The ratio...
- Q Six moles of O gas is heated from 20 C to 35 C at constant volume If specific heat capacity at constant pressure is 8 cal mol 1 K 1...
- Q The contents of a well insulated tank are system heated by a resistor of 23 ohm in which 10 A current is flowing Consider the tank along with its contents...
- Q A certain amount of an ideal gas initially at a pressure P and temperature T First it undergoes a constant pressure process 1 2 such that T 3T 4 Then...
- Q Define the decay constant of radioactive gold 198 198Au used in imaging the structure of the liver if its half life is 2 67 days Select one O 0 26...
- Q Suppose we double the temperature of a gas in a closed rigid container What happens to the pressure of the gas Select one O a It becomes quarter of its...
- Q A monoatomic gas expands following a thermodynamic law P C V C Where C C2 are constants from state A Vo 3Po to B 3Vo Po What will be the...
- Q One mole of an ideal monoatomic gas at temperature To expands slowly according to the law P constant If the final temperature is 2To V heat supplied to the gas...
- Q 134 When temperature of a gas contained in closed vessel is increased by 5 C its pressure increases by 1 The original temperature of the gas was approximately 1 500...
- Q An ideal gas undergoes a cyclic process as shown in the given P T diagram where AC is adiabatic The process is also represented by A D P P B...
- Q In isobaric process the ratio of increase in internal energy to the heat supplied for mono atomic gas is X In another isobaric process the ratio of work done to...
- Q 32 gram of oxygen gas at temperature 27 C is compressed adiabatically to 1 3 of its initial volume Calculate the change in internal energy y 1 5 for oxygen...
- Q An ideal gas expands isothermally along AB and does 700 J of work a How much heat does the gas exchange along AB The gas expands adiabatically along BC and...
- Q A domestic refrigerator provides 80W of refrigeration at 18 C for the freezer and 40W of refrigeration at 5 C for the fresh food compartment The refrigerator is placed in...
- Q 2 kg of ice at 20 C is mixed with 5 kg of H O at 20 C in an insulating vessel having negligible heat capacity Calculate the final mass...
- Q estion 19 2414011921 PCM Physics Camot s engine with its cold body at 17 C has 50 efficiency If the temperature of its hot body is now increased by 145...
- Q 94 A Carnot engine whose efficiency is 40 takes in heat from a source maintained at a temperature of 500 K It is desired to have an engine of efficiency...
- Q Q 3 0 25 kg of air at a pressure of 140 kN m occupies 1 5 m and from this condition it is compressed to 1 4 MPa according...
- Q 14 1 mole of He and 2 moles of O are contained in an adiabatic cylinder at pressures and temperatures as shown in figure If the adiabatic partition wall is...
- Q 14 1 mole of He and 2 moles of O2 are contained in an adiabatic cylinder at pressures and temperatures as shown in figure If the adiabatic partition wall is...
- Q 7 A calorimeter contains 10 g of water at 20 C The temperature falls to 15 C in 10 min When calorimeter contains 20 g of water at 20 C...
- Q 1 1 J PB 74 Two moles of helium gas undergo a cyclic process as shown in figure Assuming the gas to be ideal the net work done by the...
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