The lower fixed point of Celsius scale and Fahrenheit scales of a lab thermometer have the same magnitude.
The correct option is B False
Lower fixed point of a lab thermometer is the melting point of pure ice. In Celcius scale, melting point is about 0∘C. Fahrenheit equivalent of 0∘C is 32∘F. Hence, the magnitude of the measurement in the two scales for the thermometer is different at Lower fixed point.