AIPMT 2015 Cancelled Paper | Heat and Thermodynamics Question 44 | Physics

One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure.

AIPMT 2015 Cancelled Paper Physics - Heat and Thermodynamics Question 69 English

AIPMT 2015 Cancelled Paper Physics - Heat and Thermodynamics Question 69 English

The change in internal energy of the gas during the transition is

20 J

$$-$$ 12 kJ

20 kJ

$$-$$ 20 kJ

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

Figure below shows two paths that may be taken by a gas to go from a state A to a state C.

AIPMT 2015 Cancelled Paper Physics - Heat and Thermodynamics Question 68 English

AIPMT 2015 Cancelled Paper Physics - Heat and Thermodynamics Question 68 English

In process AB, 400 J of heat is added to the system and in process BC, 100 J of heat is added to the system. The heat absorbed by the system in the process AC will be

460 J

300 J

380 J

500 J

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A Carnot engine, having an efficiency of as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is

90 J

1 J

100 J

99 J

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

The ratio of the specific heats $${{{C_p}} \over {{C_v}}} = \gamma $$ in terms of degrees of freedom (n) is given by

$$\left( {1 + {2 \over n}} \right)$$

$$\left( {1 + {n \over 2}} \right)$$

$$\left( {1 + {1 \over n}} \right)$$

$$\left( {1 + {n \over 3}} \right)$$

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