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प्रश्न
Why do people prefer wearing white clothes during summer?
उत्तर
People prefer white or light coloured clothes during summer as they are good reflectors of heat and hence, they keep us cool.
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संबंधित प्रश्न
What is the Kelvin scale of temperature?
Name the one common unit of temperature. Write their symbols also.
What is heat ? Write its S.I. unit.
Name two substances which expand on heating.
Name or state the following:
The law which states that pressure remaining constant the volume of a given mass of dry gas is directly proportional to its absolute [Kelvin] temperature.
Define one joule of heat.
Two bodies are at same temperature. Do they necessarily contain same amount of heat?
Define coefficient of linear expansion. Write its SI unit.
Define coefficient of linear expansion.
Define coefficient of volume expansion.
What is the unit of coefficient of volume expansion?
State three main characteristics of a thermometric substance.
Draw a neat and labeled diagram of a clinical thermometer
State one use of each of the following type of thermometer:
Six's maximum and minimum thermometer.
If a substance is heated or cooled, the change in mass of that substance is
Kelvin is written as K also known as absolute scale as it starts from absolute zero temperature.
Which factor determines the direction of flow of heat from one body to another?
What is the minimum possible temperature? Is there also a maximum possible temperature?
