NEET 2013 (Karnataka) | Heat and Thermodynamics Question 47 | Physics

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

Which of the following relations does not give the equation of an adiabatic process, where terms have their usual meaning?

P^{1$$-$$$$\gamma $$} T^{$$\gamma $$} = constant

PV^{$$\gamma $$} = constant

TV^{$$\gamma $$$$-$$1} = constant

P^{$$\gamma $$} T^{1$$-$$$$\gamma $$} = constant

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

A system is taken from state a to state c by two paths adc and abc as shown in the figure. The internal energy at a is $${U_a} = 10\,J$$. Along the path adc the amount of heat absorbed dQ₁ $$=$$ 50 J and the work obtained dW₁ $$=$$ 20 J whereas along the path abc the heat absorbed dQ₂ = 36 J. The amount of work allong the path abc is

NEET 2013 (Karnataka) Physics - Heat and Thermodynamics Question 56 English

NEET 2013 (Karnataka) Physics - Heat and Thermodynamics Question 56 English

10 J

12 J

36 J

6 J

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

Two Carnot engines A and B are operated in series. The engine A receives heat from the source at temperature T₁ and rejects the heat to the sink at temperature T. The second engine B receives the heat at temperature T and rejects to its sink at temperature T₂. For what values of T the efficiencies of the two engines are equal

$${{{T_1} - {T_2}} \over 2}$$

$${T_1}{T_2}$$

$$\sqrt {{T_1}{T_2}} $$

$${{{T_1} + {T_2}} \over 2}$$

NEET 2013 (Karnataka)

MCQ (Single Correct Answer)

-1

In a vessel, the gas is at pressure P. If the mass of all the molecules is halved and their speed is doubled, then the resultant pressure will be

P/2

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