What is the ratio of temperatures at 15 degrees C and 5 degrees C?

To determine the ratio of temperatures given in degrees Celsius, it’s essential to convert the temperatures to an absolute scale, such as Kelvin. The Kelvin scale is used because it starts at absolute zero and allows for direct comparison of temperature ratios.

The conversion from degrees Celsius to Kelvin involves adding 273.15. Therefore:

• For 15 degrees Celsius, the equivalent temperature in Kelvin is (15 + 273.15 = 288.15 , K).

• For 5 degrees Celsius, the equivalent temperature in Kelvin is (5 + 273.15 = 278.15 , K).

Next, to find the ratio of these two temperatures, we take the ratio of their Kelvin values:

[

\text{Ratio} = \frac{288.15}{278.15}

]

Calculating that ratio gives approximately 1.036. This value does not equate to any of the options suggesting simple integer ratios like 2:1 or 3:1. Since none of those options accurately represent the mathematical relationship derived from the Kelvin conversion, the correct understanding leads to choosing "None of the above" as the most appropriate response.

The assertion that the answer is 3:1 does not align with the