Physics
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Easy
Question
How many degrees of freedom does a gas molecule have under standard conditions if gas has density 1.3 kg/m3 and the velocity of sound propagation in the gas is v=330m/s?
- 2
- 3
- 4
- 5
The correct answer is: 5
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The pressure of an ideal gas varies according to the law 
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Given graph gives variation of 
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If density of oxygen is 1.427 kg/m3 ,the value of
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is
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The temperature of a body is increased by 50%. The 4amount of radiation emitted by it would be nearly
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The rate of dissipation of heat by a black body at temperature T is Q. What will be the rate of dissipation of heat by another body at temperature 2T and emissivity 0.25?
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A black body at a high temperature TK radiates energy at the rate of EW/m2. When the temperature falls to (T/2) K, the radiated energy will be:
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Two identical long, solid cylinders are used to conduct heat from temp T1 to temp T2. Originally the cylinders are connected in series and the rate of heat transfer is H. If the cylinders are connected in parallel then the rate of heat transfer would be:
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Three rods made of the same material and having the same cross section have been joined as shown in the figure. Each rod is of the same length. The left and right ends are kept at 0°C and 90°C respectively. The temperature of the junction of the three rods will be
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