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Physics Notes Cha 11 Heat Pdf Download for Sindh board
Describe in detail the construction and working of Celsius and Fahrenheit scales of temperature.
There are basically three temperature scales which are Celsius, Fernand and Kelvin. Kelvin is used as a SI scale temperature. Temperature Celsius and Fernand scales are described below:
In) Celsius scale of temperature:
The temperature on this scale is measured in relation to a standard temperature which is called the “triple point” of water which is orbitally 273.16 kg (note: here defined as KLVIN). As a seriousness, this temperature is taken as 273K. At this temperature, all three states can be involved in the water equation (which is ice, water and water vapour). This temperature Celsius scale is called zero 0 ° C. Here stands for ° C degree Celsius. This is the low fixed point of the thermometer. The upper fixed point of this scale is the temperature of the steam at a pressure in an atmosphere which will be 100 ° C. The interval between these points is divided into 100 equal parts. Each part measures 1 ° C.
ii) Fernate scale of temperature:
The lower fixed point on this scale is the triple point of water (or the melting point of ice at a vapour pressure) which is marked as 32 ° F. The upper fixed point is the temperature of the water vapour or boiling point under pressure in an atmosphere. This temperature is marked as 212 ° F. The interval between these points is divided into 180 equal parts. Each part measures 1 ° F.
What are gas laws?
The laws which explain the behaviour of gases are called gas laws. There are following gas laws.
i) Boyle’s Law
ii) Charles’s Law
Read more: Physics Notes Cha 10 Properties Of Matter