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What Happens to the Heat Supplied to a Substance When the Heat Supplied Causes No Change in the Temperature of the Substance? - Physics

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प्रश्न

What happens to the heat supplied to a substance when the heat supplied causes no change in the temperature of the substance?

एका वाक्यात उत्तर

उत्तर

This heat supplied is used in the change of state. This heat is known as Latent heat.

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पाठ 10: Specific Heat Capacity and Latent Heat - Short Answers

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आईसीएसई Physics [English] Class 10
पाठ 10 Specific Heat Capacity and Latent Heat
Short Answers | Q 55

संबंधित प्रश्‍न

State two characteristics of a good thermion emitter.


Write the approximate value of specific latent heat of ice.


  1. Which requires more heat: 1 g ice at 0℃ or 1 g water at 0℃ to raise its temperature to 10℃?
  2. Explain your answer in part (a).

What is meant by latent heat? How will the state of matter transform if latent heat is given off?


Name the physical quantity that measures the degree of hotness.

What is the name given to the energy absorbed during a phase change?


Name two factors on which the heat absorbed or given out by a body depends.


Give one consequence of the high specific latent heat of fusion of ice.


Define the term ‘specific latent heat of fusion’ of a substance.


The specific latent heat of vaporisation of steam is 2260 J/g. Comment on this.


Explain, why no tracks are left on the ice during ice skating?


What do you understand by the ‘latent heat of vaporization’ of a substance?


Steam at 100°C is passed over 1000 g of ice at 0°C. After some time, 600 g of ice at 0°C is left and 450 g of water at 0°C is formed. Calculate the specific latent heat of vaporization of steam (Given: specific heat capacity of water = 4200 J/kg°C, specific latent heat of fusion of ice = 336,000 J/kg.)


Match the columns.

Column A Column B
1) Absolute humidity a) J or cal
2) Latent heat b) J/kg °C
3) Specific heat capacity c) kJ/kg
4) Heat d) no unit
  e) kg/m3

The latent heat of vaporisation is a term referred for the conversion of gas into liquid.


Write scientific reason.

The bottom of some steel utensils used for cooking is copper.


Specific latent heat L = ______.


Specific latent heat of a substance ______.


Calculate the total amount of heat energy required to melt 200 g of ice at 0°C to water at 100°C. (Specific latent heat of ice = 336 Jg-1, specific heat capacity of water = 4.2 Jg-1 °C-1)


Observe the following graph and answer the following questions:

  1. What does the graph represent? 
  2. What does the line AB represent?
  3. What does the line BC represent?

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