NEET 2016 Phase 1 | Heat and Thermodynamics Question 29 | Physics

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

A gas is compressed isothermally to half its initial volume. The same gas is compressed separately through an adiabatic process until its volume is again reduced to half. Then

Compressing the gas isothermally or adiabatically will require the same amount of work.

Which of the case (whether compression through isothermal or through adiabatic process) requires more work will depend upon the atomicity of the gas.

Compressing the gas isothermally will require more work to be done.

Compressing the gas through adiabatic process will require more work to be done.

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

The molecules of a given mass of a gas have r.m.s. velocity of 2000 m s^$$-$$1 at 27^oC and 1.0 $$ \times $$ 10⁵ N m^$$-$$2 pressure. When the temperature and pressure of the gas are respectively, 127^oC and 0.05 $$ \times $$ 10⁵ N m^$$-$$2, the r.m.s. velocity of its molecules in m s^$$-$$1 is

$${{100\sqrt 2 } \over 3}$$

$${{100} \over 3}$$

$$100\sqrt 2 $$

$${{400} \over {\sqrt 3 }}$$

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

A refrigerator works between 4^oC and 30^oC. It is required to remove 600 calories of heat every second in order to keep the temperature of the refrigerated space constant. The power required is (Take 1 cal = 4.2 Joules)

236.5 W

2365 W

2.365 W

23.65 W

AIPMT 2015

MCQ (Single Correct Answer)

-1

An ideal gas is compressed to half its initial volume by means of several processes. Which of the process results in the maximum work done on the gas ?

Isochoric

Isothermal

Adiabatic

Isobaric

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