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प्रश्न
Define temperature and write its S.I. unit.
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उत्तर
Temperature is the parameter which tells the thermal state of a body (i.e. the degree of hotness or coldness).
The S.I. unit of temperature is 'kelvin'.
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संबंधित प्रश्न
Name two scales of temperature. How are they interrelated?
The temperature of a body rises by 1°C. What is the corresponding rise on the (a) Fahrenheit scale (b) Kelvin scale?
Who is telling the truth?
Heat flows from an object at higher temperature to an object at lower temperature.
1 joule = 4.2 calorie
Is this relation correct?
Why does a substance expand on heating?
Convert the following temperature into Fahrenheit scale:
600C
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.
Suppose your normal body temperature were lower than what it is. How would the sensation of hot and cold change?
Give reasons why –
we wear woolen clothes in winter
