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Heat
Easy
Question
The pressure of an ideal gas varies according to the law 
where P0 and A are positive constants. What is the highest temperature that can be attained by the gas?
The correct answer is:
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Given graph gives variation of 
with P for 1gm of oxygen at two different
temperatures 
If density of oxygen is 1.427 kg/m3 ,the value of
at point A and relation between 
is
Given graph gives variation of with P for 1gm of oxygen at two different
temperatures If density of oxygen is 1.427 kg/m3 ,the value of
at point A and relation between is
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Two chambers one containing m1 gram of a gas at pressure P1 and other containing m2 gram
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Two chambers one containing m1 gram of a gas at pressure P1 and other containing m2 gram
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Determine the gas temperature at which the root mean square velocity of hydrogen molecules exceeds their most probable velocity by 400 m/s
Determine the gas temperature at which the root mean square velocity of hydrogen molecules exceeds their most probable velocity by 400 m/s
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At what absolute temperature T, is ‘rms’ speed of a hydrogen molecule equal to its escape velocity from the surface of the moon? The radius of moon is R, g is the acceleration due to gravity on moon’s surface, m is the mass of a hydrogen molecule and k is the Boltzmann constant.
At what absolute temperature T, is ‘rms’ speed of a hydrogen molecule equal to its escape velocity from the surface of the moon? The radius of moon is R, g is the acceleration due to gravity on moon’s surface, m is the mass of a hydrogen molecule and k is the Boltzmann constant.
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vessel at 300K. What heat must be supplied to it to double the ‘rms’ velocity of its molecules
vessel at 300K. What heat must be supplied to it to double the ‘rms’ velocity of its molecules
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A vessel of volume V = 5.0 litre contains 1.4 gm of nitrogen at temperature T=1800 K. Find the pressure of the gas if 30% of its molecule are dissociated into atom at this temperature
A vessel of volume V = 5.0 litre contains 1.4 gm of nitrogen at temperature T=1800 K. Find the pressure of the gas if 30% of its molecule are dissociated into atom at this temperature
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The rate of cooling at 600 K, if surrounding temperature is 300 K is H. The rate of cooling at 900 K is
The rate of cooling at 600 K, if surrounding temperature is 300 K is H. The rate of cooling at 900 K is
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The radiation emitted by a star A is 1000 times that of the sun. If the surface temperatures of the sun and star A are 6000 K and 2000 K respectively, the ratio of the radii of the star A and the sun is:
The radiation emitted by a star A is 1000 times that of the sun. If the surface temperatures of the sun and star A are 6000 K and 2000 K respectively, the ratio of the radii of the star A and the sun is:
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Physics
The temperature of a body is increased by 50%. The 4amount of radiation emitted by it would be nearly
The temperature of a body is increased by 50%. The 4amount of radiation emitted by it would be nearly
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A black body is heated from 7oC to 287oC. The ratio of radiation emitted is:
A black body is heated from 7oC to 287oC. The ratio of radiation emitted is:
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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?
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:
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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Physics
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:
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
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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If l is the length, A is the area of cross-section and K the thermal conductivity, then the thermal resistance of the block is given by
If l is the length, A is the area of cross-section and K the thermal conductivity, then the thermal resistance of the block is given by
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