Question

A thermometer reads 73.5°C and the correction from the calibration curve is  l - 0.35°C in the measurement range of 70°C to 90°C. What is the true value of the temperature?

1. 73.85°C
2. 73.15°C
3. 70.35°C
4. 90.85°C

Answer 1

Correct Answer - Option 2 : 73.15°C

Concept:

As our temperature lies between the range of 70°C to 90°C.

According to the calibration curve

True Value of temperature = I - 0.35°C

where l is average temperature or reading temperature.

Calculation:

Given:

Reading Temperature (l) = 73.5°C,  correction factor = l - 0.35°C.

True Value of temperature = I - 0.35°C.

True Value of temperature = 73.5°C - 0.35°C = 73.15°C.