1.

i) Write one point of distinction between kinetic energy andpotential energy. What is the role of latent heat in thechange of state of a substance?

Answer»

Whilekinetic energyis theenergywhich an object contains because of a particular motion. On the other hand,potential energyis the storedenergy, because of its state of rest.Role of latent heat in state of change of substance :Latent heatdoes not raise the temperature.But thelatent heat has always to be supplied to changethestate of a substance.It is calledlatent heat because it becomes hidden in the substanceundergoing thechange of state,and does not show its presence by raising the temperature.



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