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What is the Energy Absorbed During the Phase Change Called? - Physics

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प्रश्न

What is the energy absorbed during the phase change called?

उत्तर

Latent heat of fusion

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2017-2018 (March) Set A

संबंधित प्रश्न

State any two measures to minimize the impact of global warming.


1 g ice of 0℃ melts to form 1 g water at 0℃. State whether the latent heat is absorbed or given out by ice.


A molten metal of mass 150 g is kept at its melting point 800℃. When it is allowed to freeze at the same temperature, it gives out 75,000 J of heat energy.

  1. What is the specific latent heat of the metal?
  2. If the specific heat capacity of metal is 200 J kg-1 K-1, how much additional heat energy will the metal give out in cooling to -50℃?

When a liquid is getting converted into solid, the latent heat is  ………………………………


Explain the following temperature vs time graph.


Is heat a form of energy?

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


Explain why water is used in hot water bottles for fomentation and also as a universal coolant.


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


Why water get cooled in a ‘Surahi’ in hot season?


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


Why does evaporation causes cooling and why is water used in hot water bottles?


Specific latent heat of vaporisation : J/kg : : specific heat : _______


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


1 kg of dry air at a temperature of 40 °C can hold a maximum of 49 g of water vapour.


Write scientific reason.

Even if boiling water is constantly heated, its temperature does not rise.


For the same mass of ice and ice-cold water, why does ice produce more cooling than ice-cold water?


Give some practical applications of specific latent heat of ice.


2875 J of heat is required to melt 115 g of lead at its melting point. Calculate the specific latent heat capacity of fusion of lead.


Specific latent heat of a substance ______.


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