Advertisements
Advertisements
प्रश्न
Who is telling the truth?
Heat flows from an object at higher temperature to an object at lower temperature.
Advertisements
उत्तर
Sentence is telling the truth as heat energy flows from an object at a higher temperature to an object at a lower temperature.
संबंधित प्रश्न
State two uses of a bimetallic strip.
State the types of thermal expansion. What is the relation between α and γ?
The following figure shows a rectangular box with two tubes P and Q at the top. A burning candle R is placed under the tube P. The candle burns brightly.
Explain:
(i) How is the air in the box circulating?
(ii) What will happen if the opening Q is closed?
Give reason for the following
The electric wire which sag in summer become straight in winter.
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.
Which factor determines the direction of flow of heat from one body to another?
What do you mean by thermal equilibrium?
