NEET 2017 | Heat and Thermodynamics Question 35 | Physics

NEET 2017

MCQ (Single Correct Answer)

-1

A gas mixture consists of 2 moles of O₂ and 4 moles of Ar at temperature T. Neglecting all vibrational modes, the total internal energy of the system is

15 RT

9 RT

11 RT

4 RT

NEET 2017

MCQ (Single Correct Answer)

-1

A carnot engine having an efficiency of $${1 \over {10}}$$ 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

99 J

100 J

1 J

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

One mole of an ideal monatomic gas undergoes a process described by the equation PV³ = constant. The heat capacity of the gas during this process is

$${3 \over 2}$$ R

$${5 \over 2}$$ R

NEET 2016 Phase 2

MCQ (Single Correct Answer)

-1

The temperature inside a refrigerator is t₂ ^oC. The amount of heat delivered to the room for each joule of electrical energy consumed ideally will be

$${{{t_1}} \over {{t_1} - {t_2}}}$$

$${{{t_1} + 273} \over {{t_1} - {t_2}}}$$

$${{{t_2} + 273} \over {{t_1} - {t_2}}}$$

$${{{t_1} + {t_2}} \over {{t_1} + 273}}$$

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