The lower fixed point of an graduated thermometers 20-degree of much is 100 calculate the equivalent reading in Kelvin scale thermometer?

To calculate the equivalent reading on the Kelvin scale thermometer, we need to convert the Celsius temperature to Kelvin.

The Kelvin scale starts from absolute zero, which is the point where all molecular motion stops. To convert from Celsius to Kelvin, we need to add 273.15 to the Celsius temperature.

Here's how you can calculate the equivalent reading in the Kelvin scale thermometer:

1. Subtract the lower fixed point of the graduated thermometer from the given temperature:
20 - 0 = 20

2. Add 273.15 to the result from step 1 to convert the Celsius temperature to Kelvin:
20 + 273.15 = 293.15

Therefore, the equivalent reading on the Kelvin scale thermometer would be 293.15 Kelvin.

It's important to note that the Kelvin scale is an absolute temperature scale, where 0 Kelvin represents absolute zero.