Part 1
The amount of heat conducted out per second through a window, when inside temperature is 10∘C and outside temperature is −10∘C, is 1000 J. Same heat will be conducted in through the window, when outside temperature is −23∘C and inside temperature is:
19
Nov
The amount of heat conducted out per second through a window, when inside temperature is 10∘C and outside temperature is −10∘C, is 1000 J. Same heat will be conducted in through the window, when outside temperature is −23∘C and inside temperature is: is 1000 J. Same heat will be conducted in through the window The [...]
How much work can be obtained from 100 calories of heat energy?
19
Nov
How much work can be obtained from 100 calories of heat energy? How much work can be obtained from 100 calories of heat energy? November 19, 2020 Category: Chapter 16 - Calorimetry and Heat Transfer , MTG NEET Physics , Part 1 ,
A piece of ice (heat capacity =2100J kg^−1 ∘C^−1 and latent heat =3.36×10^5Jkg^−1) of mass m grams is at −5∘C at atmospheric pressure. It is given 420 J of heat so that the ice starts melting. Finally when the ice . Water mixture is in equilibrium, it is found that 1 gm of ice has melted. Assuming there is no other heat exchange in the process, the value of m is
19
Nov
A piece of ice (heat capacity =2100J kg^−1 ∘C^−1 and latent heat =3.36×10^5Jkg^−1) of mass m grams is at −5∘C at atmospheric pressure. It is given 420 J of heat so that the ice starts melting. Finally when the ice . Water mixture is in equilibrium, it is found that 1 gm of ice has [...]
The sprinkling of water reduces slightly the temperature of a closed room because
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Nov
The sprinkling of water reduces slightly the temperature of a closed room because The sprinkling of water reduces slightly the temperature of a closed room because November 19, 2020 Category: Chapter 16 - Calorimetry and Heat Transfer , MTG NEET Physics , Part 1 ,
0.1 m^3 of water at 80 degree C is mixed with 0.3 m^3 of water at 60^0 C. The final temperature of the mixture is
19
Nov
0.1 m^3 of water at 80 degree C is mixed with 0.3 m^3 of water at 60^0 C. The final temperature of the mixture is 0.1 m^3 of water at 80 degree C is mixed with 0.3 m^3 of water at 60^0 C. The final temperature of the mixture is November 19, 2020 Category: Chapter [...]
Certain amount of heat is given to 100 g of copper to increase its temperature by 21 ∘C. if the same amount of heat is given to 50 g of water, then the rise in its temperature is (specific heat capacity of copper = 400 J kg^−1K^−1 and that for water = 4200J kg^−1 K^−1
19
Nov
Certain amount of heat is given to 100 g of copper to increase its temperature by 21 ∘C. if the same amount of heat is given to 50 g of water, then the rise in its temperature is (specific heat capacity of copper = 400 J kg^−1K^−1 and that for water = 4200J kg^−1 K^−1 [...]
The temperature of equal masses of three different liquids A, B and C are 12∘C, 19∘C and 28∘C respectively. The temperature when A and B are mixed is 16∘C and when B and C are mixed is 23∘C. The temperature when A and C are mixed is
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Nov
The temperature of equal masses of three different liquids A, B and C are 12∘C, 19∘C and 28∘C respectively. The temperature when A and B are mixed is 16∘C and when B and C are mixed is 23∘C. The temperature when A and C are mixed is 19∘C and 28∘C respectively. The temperature when A [...]
The latent heat of vaporisation of a substance is always
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Nov
The latent heat of vaporisation of a substance is always The latent heat of vaporisation of a substance is always November 19, 2020 Category: Chapter 16 - Calorimetry and Heat Transfer , MTG NEET Physics , Part 1 ,
Rays from the sun are focused by a lens of diameter 5 cm on to a block of ice and 10 g of ice is melted in 20 min. Therefore the heat from the sun reaching the earth per min per square centimeter is (Latent heat of ice L = 80 cal g^−1 )
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Nov
Rays from the sun are focused by a lens of diameter 5 cm on to a block of ice and 10 g of ice is melted in 20 min. Therefore the heat from the sun reaching the earth per min per square centimeter is (Latent heat of ice L = 80 cal g^−1 ) Thermal [...]
A copper block of mass 2.5kg is heated in a furnace to a temperature of 500∘C and then placed on a large ice block. What is the maximum amount (approx.) of ice that can melt? (Specific heat copper =0.39J/g^-1 K^-1. Heat of fusion of water =335J/g).
19
Nov
A copper block of mass 2.5kg is heated in a furnace to a temperature of 500∘C and then placed on a large ice block. What is the maximum amount (approx.) of ice that can melt? (Specific heat copper =0.39J/g^-1 K^-1. Heat of fusion of water =335J/g). Thermal capacity of 40 g of aluminum (s = [...]