Question

Which of the following pairs may give equal numerical values of the temperature of human body?

• A. Fahrenheit and Celsius
• B. Celsius and Kelvin
• C. Kelvin and Reaumur
• D. None of these

Hint:

Only Celsius and Fahrenheit scales have a common numerical value, which occurs at (-40^circ). This has no relation to human body temperature.

Answer 1

The Correct Option is D

Step 1: Recall the normal temperature of the human body. Normal human body temperature is approximately: \[ 37^\circ\text{C} = 98.6^\circ\text{F} = 310\ \text{K} \] Step 2: Check equality of numerical values between different scales.

Fahrenheit and Celsius: They are numerically equal only at \(-40^\circ\), not at body temperature.
Celsius and Kelvin: \[ K = C + 273 \] So numerical equality is impossible.
Kelvin and Reaumur: \[ R = \frac{4}{5}C \] No numerical equality occurs at body temperature.
Step 3: Final conclusion. None of the given pairs have equal numerical values for the temperature of the human body. \[ \boxed{\text{(D)}} \]