Advertisements
Advertisements
Question
m kg of a substance of specific heat capacity s J/kg °C is heated so that its temperature rises from θ1°C to θ2°C. Write down the expression for the heat Q supplied.
Advertisements
Solution
Heat supplied Q = mass × sp. heat capacity × rise in temperature
= m × s × (θ2 – θ1)
APPEARS IN
RELATED QUESTIONS
The specific heat capacity of water is :
Name the radiations for which the green house gases are opaque ?
What is meant by global warming?
The specific heat capacity of a body depends on _____________ .
State, with reason, which of the two, boiling water or steam both at 100°C will produce more severe burns.
Water boils at 120 °C in a pressure cooker. Explain the reason.
Explain, why do sandy soils, get heated up quickly as compared to wet soils?
Read this activity and answer the following questions.
- Take three spheres of iron, copper and lead. the lead of equal mass.
- Put all the three spheres in boiling water in the beaker for some time.
- Take the three spheres out of the water.
- All the spheres will be at a temperature 100 °C.
- Put them immediately on the thick slab of wax.
- Note, the depth that each of the sphere goes into the wax.
Questions:
- Which property is determined from this activity?
- Give name to that property.
- Explain the term principal of heat exchange with the help of this activity.
Specific heat capacity of a substance X is 1900 Jkg-1°C-1 means ______.
