AIPMT 2015 | Heat and Thermodynamics Question 45 | Physics

AIPMT 2015

MCQ (Single Correct Answer)

-1

The coefficient of performance of a refrigerator is 5. If the temperature inside freezer is $$-$$20^oC, the temperature of the surroundings to which it rejects heat is

11^oC

21^oC

31^oC

41^oC

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

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 71 English

AIPMT 2015 Cancelled Paper Physics - Heat and Thermodynamics Question 71 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

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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