Advertisements
Advertisements
प्रश्न
Thermal energy always flows from a system at higher temperature to a system at lower temperature.
पर्याय
True
False
Advertisements
उत्तर
Thermal energy always flows from a system at higher temperature to a system at lower temperature - true.
APPEARS IN
संबंधित प्रश्न
Two substances A and B have specific heats c and 2 c respectively. If A and B are given Q and 4Q amounts of heat respectively, the change in their temperatures is the same. If the mass of A is m, what is the mass of B?
Why does a piece of ice when touched with a hand, appear cool? Explain.
Define calorie. How many joules make one calorie?
What is evaporation? Why does it cause cooling?
The following figure shows a container in which a lighted candle has been kept. The container has two openings, p, and Q. Which way the smoke from an external source placed near P moves when it reaches P and leaves from Q. Give a reason for your answer.

Heat energy is always transferred from ______ to ______ temperatures.
When a substance is heated, its temperature ______.
Give reasons why –
a steam burn is more damaging than a burn caused by boiling water at the same temperature.
