Advertisements
Advertisements
Question
Define absolute zero and absolute scale of temperature. Write about the relationship between °C and K.
Advertisements
Solution
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.
APPEARS IN
RELATED QUESTIONS
Fill in the blanks:
The temperature on the Kelvin scale at which molecular motion completely ceases is called……………
Fill in the blanks:
The melting point of ice is …………. Kelvin.
The hottest natural temperature ever recorded on earth is ______.
Temperature of the universe in the earliest moments after the big bang is ______.
The temperatures in Celsius and in Fahrenheit will be same at -40.
Assertion and Reason.
Assertion(A): When a very hot liquid is poured into a thick glass tumbler it cracks.
Reason (R): Unequal expansion of inner and outer glass walls causes the glass to crack.
Which of the following is not a scale of temperature?
Differentiate between the three temperature scales.
______ is known as an absolute scale.
Convert the following
40°C to Fahrenheit (°F)
