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संबंधित प्रश्न
What do you mean by the following statement?
The specific heat capacity of copper is 0. 4 Jg-1 K-1?
Name the radiations for which the green house gases are transparent ?
What are the factors on which the quantity of heat given to a body depends?
Is it possible to condense the water formed, back to ice by adding ice at 0°C. Explain with reason.
Write an expression for the heat energy liberated by a hot body.
Write the name.
The amount of heat absorbed at constant temperature by unit mass of a liquid to convert into gaseous phase.
Explain how heat capacity of a solid can be determined by the method of mixture.
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.
A piece of lead weighing 500 g gives out 1200 calories of heat when it is cooled from 100° C to 20° C. Find its specific heat.
Two cylinders of equal height and radius are made of copper and aluminum. Which of them conducts heat faster?
