AIEEE 2004 | Heat and Thermodynamics Question 434 | Physics

During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio $${C_p}/{C_V}$$ for the gas is

$${4 \over 3}$$

$$2$$

$${5 \over 3}$$

$${3 \over 2}$$

AIEEE 2003

MCQ (Single Correct Answer)

-1

The earth radiates in the infra-red region of the spectrum. The spectrum is correctly given by

Rayleigh Jeans law

Planck's law of radiation

Stefan's law of radiation

Wien's law

AIEEE 2003

MCQ (Single Correct Answer)

-1

Out of Syllabus

A carnot engine takes $$3 \times {10^6}$$ cal. of heat from a reservoir at $${627^ \circ }C,$$ and gives it to a sink at $${27^ \circ }C$$. The work done by the engine is

$$4.2 \times {10^6}J$$

$$8.4 \times {10^6}J$$

$$16.8 \times {10^6}J$$

zero

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