Question
State the principle of calorimetry.

Answer

Principle of Calorimetry:
When a hot body is mixed or kept in contact with a cold body, there is a transfer of heat from hot body to cold body such that
Total heat gained by colder body = Total heat lost by the hot body,
if there is no loss of heat to the surroundings.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Name two factors which affect the critical angle for a given pair of media. State how do the factors affect it.
Explain why alpha and beta particles are deflected in an electric or a magnetic field, but gamma rays are not deflected in such a field.
How does the intensity of scattered light depend on the wavelength of incident light? State conditions when this dependence holds.
Draw a neat diagram to show the arrangement you would use to project a pure spectrum of white light on a screen.
Adjacent diagram shows a body of mass 5 kg pulled up an inclined plane by a force of 30 N .
(a) Calculate force of gravity acting on body. (Take $g =10 ms^{-2}$ )
(b) Work done by the force in pulling body along the inclined plane.
(c) Work done against the force of gravity.
Image
Why should a radioactive substance not be touched by hands?
Two waves of the same pitch have their amplitudes in the ratio $2 : 3.$
(i) What will be the ratio of their loudness?
(ii) What will be the ratio of their frequencies?
The diagram shows the change of phases of a substance on a temperature vs time graph on heating the substance at a constant rate.
(a) Why is the slope of CD less than slope of AB ?
(b) What is the boiling and melting points of the substance?
Image
(a) What is the composition of $\gamma$-radiation?
(b) Give two important precautions that should be taken while handling radioactive materials.
A block of iron of mass $400$ kg is used as a pile driver. If it is raised to a height of $20$ meters, calculate the potential energy possessed by the iron block. (Assume $g =10 ms^{-2}$ ).