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प्रश्न
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उत्तर
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संबंधित प्रश्न
Define temperature and write its S.I. unit.
Why does a piece of ice when touched with a hand, appear cool? Explain.
Define heat energy on the basis of kinetic theory of matter.
State three main characteristics of a thermometric substance.
The hot metal ball is suspended from a string in a metal box as shown in the following figure
(i) What are the ways in which the ball loses heat
(ii) Which side of the box will be the hottest and which the least hot after some time? Explain.
Distinguish between heat and temperature.
Numerical Problems.
An iron ball requires 1000 J of heat to raise its temperature by 20°C. Calculate the heat capacity of the ball.
Kelvin is written as K also known as absolute scale as it starts from absolute zero temperature.
Heat energy flows from a body at a low temperature to a body at a higher temperature.
