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qUESTIONS

The value of molar specific heat at constant pressure for one mole of triatomic gas (triangular arrangement) at temperature T K is (R = universal gas constant)

A thin square steel plate with each side equal to 10 cm is heated by a blacksmith. The rate of radiated energy by the heated plate is 1134 W. The temperature of the hot steel plate is (Stefan’s constant σ = 5.67 × 10^-8 watt m^-2 K^-4 emissivity of the plate = 1)

For a gas,the rms speed at 800 k is

A black body at 1373°C emits maximum energy corresponding to a wavelength of 1.78 micron. The temperature of moon for which λm = 14 micron would be

The wavelength of maximum intensity of radiation emitted by a star is 289.8 nm, then the radiation intensity for the star is (Stefan’s constant = 5.67 x10^-8 Wm^-2 K^-2 , Wien’s constant b = 2878 µK ).

0 cal of heat is required to raise the temperature of 2 moles of an ideal gas from 30°C to 35°C while the pressure of the gas is kept constant. The amount of the heat required to raise the temperature of the same gas through the same temperature range at constant volume is (gas constant R = 2 cal mol-¹ K-¹)

For a gas molecule with 6 degrees of freedom, the law of equipartition of energy gives the following relation between the molecular specific heat (Cv) and gas constant (R)

The degrees of freedom of a stationary rigid body about its axis will be

For a gas Ɣ=7/5. The gas may probably be

What is the value of R/Cp for diatomic gas

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