then the temperature of the cooler end is
Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductivity. The first and third plates are maintained at temperatures 2T and 3T respectively. The temperature of the middle (i.e., second) plate under steady state condition is :
10
Sep
Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductivity. The first and third plates are maintained at temperatures 2T and 3T respectively. The temperature of the middle (i.e., second) plate under steady state condition is : [...]
A metal rod AB of length 10x has its one end A in ice at 0 C, and the other end B in water at 100 C. If a point P one the rod is maintained at 400 C, then it is found that equal amounts of water and ice evaporate and melt per unit time. The latent heat of evaporation of water is 540cal/g and latent heat of melting of ice is 80cal/g. If the point P is at a distance of lambda x from the ice end A, find the value lambda. [Neglect any heat loss to the surrounding.]
10
Sep
A metal rod AB of length 10x has its one end A in ice at 0 C, and the other end B in water at 100 C. If a point P one the rod is maintained at 400 C, then it is found that equal amounts of water and ice evaporate and melt per unit [...]
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A metal rod AB of length 10x has its one end A in ice at 0 C ,
and the other end B in water at 100 C. If a point P one the rod is maintained at 400 C ,
The temperature gradient in a rod of 0.5 m long is 80 C/m. If the temperature of hotter end of the rod is 30 C ,
then the temperature of the cooler end is ,
A long metallic bar is carrying heat from one of its ends to the other end under steady-state. The variation of temperature theta along the length x of the bar from its hot end is best described by which of the following figures?
10
Sep
A long metallic bar is carrying heat from one of its ends to the other end under steady-state. The variation of temperature theta along the length x of the bar from its hot end is best described by which of the following figures? The temperature gradient in a rod of 0.5 m long is 80 [...]
A cylinder of radius R made of a material of thermal conductivity K_1 is surrounded by a cylindrical shell of inner radius R and outer radius 2R made of a material of thermal conductivity K_2. The two ends of the combined system are maintained at two different temperatures. There is no loss of heat across the cylindrical surface and the system is in steady state. The effective thermal conductivity of the system is
10
Sep
A cylinder of radius R made of a material of thermal conductivity K_1 is surrounded by a cylindrical shell of inner radius R and outer radius 2R made of a material of thermal conductivity K_2. The two ends of the combined system are maintained at two different temperatures. There is no loss of heat across [...]
A glass window conducts out a certain quantity of heat per second when the inside temperature is 10 C and the outside temperature is – 10 C. The same quantity of heat will be conducted in through the window per second when the inside temperature is – 43C and the outside temperature is
10
Sep
A glass window conducts out a certain quantity of heat per second when the inside temperature is 10 C and the outside temperature is – 10 C. The same quantity of heat will be conducted in through the window per second when the inside temperature is – 43C and the outside temperature is The temperature [...]
One end of a thermally insulated copper rod of length 1 m long and of 10 cm^(2) in X-section is immersed in boiling water (100 C) and the other in ice (0 C) . If K_(Cu) = 0.92 cal/cm/s/C and L_(ice) = 80 cal/g, the ice that will melt per minute is
10
Sep
One end of a thermally insulated copper rod of length 1 m long and of 10 cm^(2) in X-section is immersed in boiling water (100 C) and the other in ice (0 C) . If K_(Cu) = 0.92 cal/cm/s/C and L_(ice) = 80 cal/g, the ice that will melt per minute is The temperature gradient [...]
Two vessels A and B of different materials are similar in shape and size. The same quantity of ice filled in them gets melted in time t1 and t2 respectively. The ratio of thermal conductivities of A and B is
10
Sep
Two vessels A and B of different materials are similar in shape and size. The same quantity of ice filled in them gets melted in time t1 and t2 respectively. The ratio of thermal conductivities of A and B is The temperature gradient in a rod of 0.5 m long is 80 C/m. If the [...]
The temperature gradient in a rod of 0.5 m long is 80 C/m. If the temperature of hotter end of the rod is 30 C, then the temperature of the cooler end is
10
Sep
The temperature gradient in a rod of 0.5 m long is 80 C/m. If the temperature of hotter end of the rod is 30 C, then the temperature of the cooler end is The temperature gradient in a rod of 0.5 m long is 80 C/m. If the temperature of hotter end of the rod [...]