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प्रश्न
Define absolute zero and absolute scale of temperature. Write about the relationship between °C and K.
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उत्तर
Absolute zero
The temperature of -273°C is called absolute zero.
`"V" = "V"_°((273 + "t")/273)`
Volume at -273°C = V° `((273 - 273)/273) = 0`
Absolute or Kelvin scale of temperature
The temperature scale with its zero at -273°C and each degree equal to one degree on the Celsius scale is called Kelvin or the absolute scale of temperature.
Conversion of temperature from Celsius scale to Kelvin scale and vice versa
The value on the Celsius scale can be converted to the Kelvin scale by adding 273 to it.
Example:
20°C = 20 + 273 = 293 K.
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