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The thermal radiation emitted by a body is proportional to Tn where T is its absolute temperature. The value of n is exactly 4 for
10
Sep
The thermal radiation emitted by a body is proportional to Tn where T is its absolute temperature. The value of n is exactly 4 for The thermal radiation emitted by a body is proportional to Tn where T is its absolute temperature. The value of n is exactly 4 for September 10, 2021 Category: Cengage [...]
A 5 cm thick ice block is there on the surface of the water in a lake. The temperature of the air is –10°C; how much time it will take to double the thickness of the block ? (L=80cal/g, K=0.004Erg/s−k, d=0.92gcm^–3 )
10
Sep
A 5 cm thick ice block is there on the surface of the water in a lake. The temperature of the air is –10°C; how much time it will take to double the thickness of the block ? (L=80cal/g, K=0.004Erg/s−k, d=0.92gcm^–3 ) A 5 cm thick ice block is there on the surface of the [...]
Water in a lake is changing into ice at 0 C when the atmospheric temperature is 10 C. If the time taken for 1 cm thick ice layer to be formed is 7 hours, the time required for the thickness of ice to increase from 1 cm to 2 cm is
10
Sep
Water in a lake is changing into ice at 0 C when the atmospheric temperature is 10 C. If the time taken for 1 cm thick ice layer to be formed is 7 hours, the time required for the thickness of ice to increase from 1 cm to 2 cm is the time required for [...]
Temperature of water at the surface of lake is -20 c. Then temperature of water just below the lower surface of ice layer is
10
Sep
Temperature of water at the surface of lake is -20 c. Then temperature of water just below the lower surface of ice layer is Temperature of water at the surface of lake is -20 c. Then temperature of water just below the lower surface of ice layer is September 10, 2021 Category: Cengage NEET by [...]
If the ratio of the coefficient of thermal conductivity of silver and copper is 10:9, then the ratio of the lengths up to which was will melt in Ingen Hauz experiment will be
10
Sep
If the ratio of the coefficient of thermal conductivity of silver and copper is 10:9, then the ratio of the lengths up to which was will melt in Ingen Hauz experiment will be If the ratio of the coefficient of thermal conductivity of silver and copper is 10:9 then the ratio of the lengths up [...]
A blackbody does not (i) emit radiation
10
Sep
A blackbody does not (i) emit radiation A blackbody does not (i) emit radiation September 10, 2021 Category: Cengage NEET by C.P Singh , Chapter 22 - Heat Transfer , 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 [...]
Tags:
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 ,