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प्रश्न
What do you understand by thermal equilibrium?
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उत्तर
Thermal equilibrium exists when two objects in thermal contact no longer affect each other’s temperature (or) Both the objects are in the same temperature they are in thermal equilibrium.
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संबंधित प्रश्न
Write down the temperature of upper fixed point,, on the Fahrenheit scale.
State the volume changes that you will observe when a given mass of water is heated from 0°C to 10°C. Sketch a temperature-volume graph to show the behaviour.
The hot metal ball is suspended from a string in a metal box as shown in the following figure
(i) What are the ways in which the ball loses heat
(ii) Which side of the box will be the hottest and which the least hot after some time? Explain.
Give reason for the following
The electric wire which sag in summer become straight in winter.
What is the concept of temperature?
Give reasons why –
a steam burn is more damaging than a burn caused by boiling water at the same temperature.
Give reasons why –
gaps are left between railway tracks
What will be the final temperature if 1,68,000 J of heat is absorbed by 2 kg of water at 30°C?
