Advertisements
Advertisements
Question
Give reason for the following:
All temperatures in the absolute (Kelvin) scale is in positive figures.
Advertisements
Solution 1
The advantage of the Kelvin scale is that it makes the application and use of gas laws simple. Of more significance is that all values on the scale are positive, removing the problem of negative (-) values on the Celsius scale.
Solution 2
All temperatures on the Kelvin scale are in positive figures.
The temperature -273°C = OK [Absolute zero or zero Kelvin]
Hence it may be negative or positive on Celsius scale, it is always positive on Kelvin as
0°C = 0 + 273 = 273K
30°C = 30 + 273 = 303 K
– 70°C = – 70+ 273;= 203 K
– 273°C = – 273 + 273 = 0 K
RELATED QUESTIONS
Convert (i) 273°C to Kelvin and (ii) 293 K to °C.
If a substance is heated or cooled, the linear expansion occurs along the axis of
Which one of the following scales has a lower fixed point at 0°C?
The coldest natural temperature ever recorded on earth is ______.
In humans, the average internal temperature is 98.60°C.
The temperatures in Celsius and in Fahrenheit will be same at -40.
Assertion and Reason.
Assertion(A): Heat energy is transferred from one body to another due to a temperature difference between them.
Reason (R): Heating a substance causes a rise in temperature.
Mention any two properties of alcohol.
Differentiate between the three temperature scales.
Convert the following
80°K to °C
