Part 1
An ideal black body at room temperature is thrown into a furnace. It is observed that.
10
Sep
An ideal black body at room temperature is thrown into a furnace. It is observed that. An ideal black body at room temperature is thrown into a furnace. It is observed that. September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 22 - Heat Transfer , Part 1 ,
When fluids are heated from the bottom, convection currents are produced because.
10
Sep
When fluids are heated from the bottom, convection currents are produced because. convection currents are produced because. When fluids are heated from the bottom September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 22 - Heat Transfer , Part 1 ,
A composite block is made of slabs A.B C,D and E of different thermal conductivities (given in terms of a constant K) and sizes (given in terms of length, L) as shown in the figure. All slabs are of same width. Heat Q flows only from left to right through the blocks. Then, in steady state
10
Sep
A composite block is made of slabs A.B C,D and E of different thermal conductivities (given in terms of a constant K) and sizes (given in terms of length, L) as shown in the figure. All slabs are of same width. Heat Q flows only from left to right through the blocks. Then, in steady [...]
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A composite block is made of slabs A.B C ,
D and E of different thermal conductivities (given in terms of a constant K ) and sizes (given in terms of length ,
In steady state ,
L) as shown in the figure. All slabs are of same width. Heat Q flows only from left to right through the blocks. Then ,
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 ,
According to the experiment of Ingen Hauze the relation between the thermal conductivity of a metal rod is K and the length of the rod whenever the wax melts is
10
Sep
According to the experiment of Ingen Hauze the relation between the thermal conductivity of a metal rod is K and the length of the rod whenever the wax melts is According to the experiment of Ingen Hauze the relation between the thermal conductivity of a metal rod is K and the length of the rod [...]
Two identical conducting rods are first connected independently to two vessels, one containing water at 100 C and the other containing ice at 0 C. In the second case the rods are joined end to end and connected to the same vessels. Let Q1 and Q2 be the rate of melting of ice in the two cases respectively. Then the ratio Q 2/Q1 is :
10
Sep
Two identical conducting rods are first connected independently to two vessels, one containing water at 100 C and the other containing ice at 0 C. In the second case the rods are joined end to end and connected to the same vessels. Let Q1 and Q2 be the rate of melting of ice in the [...]
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then the ratio of heats conducted by them in a given time will be : ,
Two identical conducting rods are first connected independently to two vessels ,
Two rods of the same material have diameters in the ratio 1:2 and the lengths in the ratio of 2:1. If the temperature difference between their ends is the same ,
A cylindrical rod with one end in a steam chamber and the other end in ice results in melting of 0.1 gm of ice per second. If the rod is replaced by another rod with half the length and double the radius of the first and if the thermal conductivity of the material of the second rod is 1/4 times that of first, the rate at which ice melts in gm/second will be :
10
Sep
A cylindrical rod with one end in a steam chamber and the other end in ice results in melting of 0.1 gm of ice per second. If the rod is replaced by another rod with half the length and double the radius of the first and if the thermal conductivity of the material of the [...]
Consider the 6 identical rods as shown in figure, the conductivity of x is double that of y. The temperature of the junction B is
10
Sep
Consider the 6 identical rods as shown in figure, the conductivity of x is double that of y. The temperature of the junction B is Consider the 6 identical rods as shown in figure the conductivity of x is double that of y. The temperature of the junction B is September 10, 2021 Category: Cengage [...]
Five rods of same dimensions are arranged as shown in the figure. They have thermal conductivities K _(1) , K_(2) , K _(3) , K_( 4) and K_( 5) . When points A and B are maintained at different temperatures, no heat flows through the central rod if
10
Sep
Five rods of same dimensions are arranged as shown in the figure. They have thermal conductivities K _(1) , K_(2) , K _(3) , K_( 4) and K_( 5) . When points A and B are maintained at different temperatures, no heat flows through the central rod if Five rods of same dimensions are arranged [...]
Three rods of identical cross-sectional area and made from the same metal from the sides of an isosceles triangle ABC, right angled at B. The points A and B are maintained at temperatures T and (2–√)T respectively. In the steady state, the temperature of the point C is Tc. Assuming that only heat conduction takes place, Tc/T is
10
Sep
Three rods of identical cross-sectional area and made from the same metal from the sides of an isosceles triangle ABC, right angled at B. The points A and B are maintained at temperatures T and (2–√)T respectively. In the steady state, the temperature of the point C is Tc. Assuming that only heat conduction takes [...]
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right angled at B. The points A and B are maintained at temperatures T and (2–√)T respectively. In the steady state ,
Tc/T is ,
the temperature of the point C is Tc. Assuming that only heat conduction takes place ,
Three rods of identical cross-sectional area and made from the same metal from the sides of an isosceles triangle ABC ,