Kinetic Theory of Gases (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 1 - 3 of 6

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Question number: 1

» Kinetic Theory of Gases » Heat Capacities and Its Relations

Appeared in Year: 2010

MCQ▾

Question

An ideal gas with heat capacity at constant volume CV undergoes a quasistatic process described by PVα in a P-V diagram, where α is a constant. The heat capacity of the gas during this process is given by –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 2

» Kinetic Theory of Gases » Kinetic Theory of Gases

Appeared in Year: 2011

MCQ▾

Question

Two bulbs of identical volumes connected by a small capillary are initially filled with an ideal gas at temperature T. Bulb 2 is heated to maintain a temperature 2T while bulb 1 remains at temperature T. Assume throughout that the heat conduction by the capillary is negligible. Then the ratio of final mass of the gas in bulb 2 to the initial mass of the gas in the same bulb is close to –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

1

Question number: 3

» Kinetic Theory of Gases » Heat Capacities and Its Relations

Appeared in Year: 2011

MCQ▾

Question

Jet aircrafts fly at altitudes above 30, 000 ft where the air is very cold at – 400C and the pressure is 0.28 atm. The cabin is maintained at 1 atm pressure by means of a compressor which exchanges air from outside adiabatically. In order to have a comfortable cabin temperature of 250C, we will require in addition

Choices

Choice (4) Response

a.

A heater to warm the air injected into the cabin

b.

An air-conditioner to cool the air injected into the cabin

c.

Neither a heater nor an air-conditioner; the compressor is sufficient

d.

Alternatively heating and cooling in the two halves of the compressor cycle

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