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प्रश्न
Why the temperature of all bodies remains constant at room temperature?
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उत्तर
All bodies radiate as well as absorb radiation at room temperature, but their rate of emission and rate of absorption is the same, hence their temperature remains constant.
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संबंधित प्रश्न
Comment on the following statement: the temperature of all the molecules in a sample of a gas is the same.
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Use R = 8.3 J K-1 mol-1
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An adiabatic cylindrical tube of cross-sectional area 1 cm2 is closed at one end and fitted with a piston at the other end. The tube contains 0.03 g of an ideal gas. At 1 atm pressure and at the temperature of the surrounding, the length of the gas column is 40 cm. The piston is suddenly pulled out to double the length of the column. The pressure of the gas falls to 0.355 atm. Find the speed of sound in the gas at atmospheric temperature.
Answer in brief:
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- per kmol
- per kg
- per molecule
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2000 calories of radiant heat is incident on a body. If the body absorbs 550 calories of heat, find the coefficient of emmission of the body.
