Advertisements
Advertisements
Question
What is heat ? Write its S.I. unit.
Solution
Heat is the energy of random motion of molecules constituting the body.
Its S.I. unit is 'joule'.
APPEARS IN
RELATED QUESTIONS
What is the difference between heat and temperature? What are their units?
A deep pond of water has its top layer frozen during winter. State the expected temperature of water layer (i) Just in contact with ice and (ii) At the bottom of pond.
Two bodies at different temperatures are placed in contact with each other. State the direction in which heat flows.
Do all substances expand on heating? Give examples.
Explain the three modes of transfer of heat.
Assertion: When water is heated up to 100°C, there is no raise in temperature until all water gets converted into water vapour.
Reason: Boiling point of water is 10°C.
When we cool the object the temperature of the object will be increased.
Temperature is related to how fast the atoms within a substance are moving.