A solid material is supplied with heat at a constant rate. The temperature of the material is changing with the heat input as shown in the graph in figure. Study the graph carefully and answer the following questions:

(i) What do the horizontal regions AB and CD represent?
If CD is equal to 2AB, what do you infer?
What does the slope of DE represents?
The slope of OAgtthe slope of BC. What does this indicate?

A solid material is supplied heat at a constant rate. The temperature of material is changing with heat input as shown in the figure. What does the slope of DE represent ?

Heat is supplied to a ice at a constant rate Temperature variation with time is as shown in figure. Then –

Study the diagram and answer the following questions What does the diagram represent?

Refer to the given graph carefully and answer the following question. Which of the labelled parts on the graph represents rigor mortis?

What does the slope of a work-time graph represent?

Read the bar graph shown in figure and answer the following questions. What is the information given by the bar graph?

A solid material is supplied with heat at a constant rate. The temperature of the material is changing with heat input as shown (i) AB: change of state from solid to liquid. CD: change of state from liquid to vapour (ii) When CD=2AB , i.e., latent heat of vapourization is twice the latent heat of fusion of the substance. (iii) The reciprocal of slope of DE represents the heat capacity of vapour state of substance . (iv) If slope of OAgt slope of BC, i.e., specific heat of liquid state is greater than specific heat that of solid state.

What is represented by the graph in Figure ?