Heat Transfer by ConvectionThis mode of heat transfer is seen in liquids and gases in which the molecules are less densely packed and are free to move. Thus, convection is the primary mode of heat transfer in fluids.Let us see the following example and l…

HEAT – A FORM OF ENERGYHave you stirred hot tea or milk with a stainless steel spoon? Next time you do this, leave the spoon in the hot liquid for a little while. Now, touch the handle of the spoon. What do you notice? The handle of the spoon would have…

Heat Transfer by ConductionWe have seen in earlier examples that metal objects heat up when they come in contact with hot solids or liquids. For example, a stainless steel spoon becomes hot when left in a hot liquid. How do you think this happens? The he…

Understanding Specific Latent Heat Specific Latent HeatThe amount of heat required to change the phase of a substance depends on the mass and the type of material of the substance.A small ice cube melts quickly but a large block of ice melts very slowly…

What is meant by Latent HeatLatent HeatFigure shows some ice cubes in a persons hand. The person makes the following observations and inferences, as shown in Table.ObservationInferenceThe ice is colder than the surroundings.Heat energy is continuously b…