Question

Which of the following scales of temperature has only positive degrees of temperature?

• A. Celsius scale
• B. Fahrenheit scale
• C. Reaumer scale
• D. Kelvin scale

Answer 1

Answer: (D)

Kelvin scale

The absolute scale temperature or Kelvin scale of temperature was suggested by Lord Kelvin. The Kelvin scale has ice point at $273K$ and steam point at $373K$. Thus, any temperature ($t^{o}C$) on the Kelvin scale is given by $T=(t+273)K$.

Celsius or Fahrenheit scale may have positive or negative values. But a Kelvin scale will have only positive values on the temperature scale.