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प्रश्न
Observe the following diagram and answer the questions given below:
Specific heat capacity of metals
- Which element has maximum specific heat capacity? Justify.
- Which element has minimum specific heat capacity? Justify.
- Define specific heat of object.
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उत्तर
- Maximum specific heat capacity is found in iron. The lead sphere absorbs less heat, which results in less heat transmission in the wax, so the sphere reaches the least depth into the wax in the activity. In contrast, the iron sphere absorbs more heat, which results in more heat transmission in the wax, so the sphere goes the deepest into the wax.
- A minimum specific heat capacity exists for lead. The lead spherical penetrates the wax the least because it absorbs less heat and transmits less heat to the wax.
- The amount of heat energy required to raise the temperature of a unit mass of an object by 1°C is called the specific heat of that object.
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संबंधित प्रश्न
Calculate the mass of ice required to lower the temperature of 300 g of water 40°C to water at 0°C.
(Specific latent heat of ice = 336 J/g, the Specific heat capacity of water = 4.2J/g°C)
50 g of metal piece at 27°C requires 2400 J of heat energy so as to attain a temperature of 327°C . Calculate the specific heat capacity of the metal.
Give a mathematical relation between Heat Capacity and Specific Heat Capacity.
Name a liquid which has the highest specific heat capacity.
Name three fossil fuels that emit carbon dioxide into the atmosphere ?
State the impact of global warming on life on the earth.
104g of water at 30°C is taken in a calorimeter made of copper of mass 42 g. When a certain mass of ice at 0°C is added to it, the final steady temperature of the mixture after the ice has melted, was found to be 10°C. Find the mass of ice added. [Specific heat capacity of water = 4.2 Jg–1°C–1 ; Specific latent heat of fusion of ice = 336 Jg–1; Specific heat capacity of copper = 0.4 Jg–1°C–1] .
A substance is heated at a constant rate from a low temperature to a high temperature. A graph of temperature against time is shown in the figure. Which part or parts of the graph correspond(s) to the substance existing in two states?
The farmers fill their fields with water in winter. Give reason.
Why is specific heat capacity taken as a measure of thermal inertia?
Explain, why does a wise farmer water his fields, if forecast is forst?
Ice-cream at 0°C feels colder than water at 0°C. Give reason for this observation.
A vessel of negligible heat*capacity contains 40g of ice in it at 0°C, 8g of steam at 100°C is passed into the ice to melt it. Find the final temperature of the contents of the vessel.
(Specific latent heat of vaporization of steam = 2268 J/g, specific latent heat of fusion of ice = 336 J/f and specific heat capacity of water = 4.2 J/g°C)
Calculate the ratio of two specific heats of polyatomic gas molecules.
A diatomic gas undergoes adiabatic change. Its pressure 'P' and temperature 'T' are related as p ∝ Tx, where x is ______.
Two blocks P and Q of different metals having their mass in the ratio 2 : 1 are given same amount of heat. Their temperature rises by same amount. Compare their specific heat capacities.
Give one example where high specific heat capacity of water is used as heat reservoir.
