Rahul observes the changes in temperature at different
intervals as follows
I. For the first time interval 
to 
seconds, the temperature first
gradually dropped from 3 0°C to 0°C.
II. For the next time interval to
seconds, the temperature remained constant
until all the ice melted.
III. In the next time interval from to 
seconds,
the temperature then increased gradually from 0°C to 100 °C.
Draw the graph to show the above mentioned changes. Now answer
the following
(i) Name the property by virtue of which the temperature
remained constant in observation (II).
(ii) What should be subsequent reading of temperature on
further heating after 
seconds of Rahul's observation?
Answer:
The
required graph to show given changes is shown below
(i) Latent heat of fusion is the property due to which the temperature
remained constant in observation (II). (1)
(ii) The temperature will remain constant at 100 °
C. (1)
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