What is the formula for converting Fahrenheit to Kelvin?

The formula for converting Fahrenheit to Kelvin involves a two-step process: first converting Fahrenheit to Celsius, and then converting Celsius to Kelvin. The correct formula accurately captures both steps.

To convert Fahrenheit to Celsius, you use the formula (C = (F - 32) / 1.8). This equation takes the Fahrenheit temperature, subtracts 32 to adjust for the freezing point of water in the Fahrenheit scale, and then divides by 1.8 to scale the value to the Celsius scale.

Next, to convert Celsius to Kelvin, you simply add 273.15 to the Celsius value since the Kelvin scale starts at absolute zero, which is 0 K (or -273.15 °C).

Thus, the complete conversion from Fahrenheit to Kelvin can be expressed as:

[K = (F - 32) / 1.8 + 273.15].

This formula successfully combines both conversions: from Fahrenheit to Celsius and from Celsius to Kelvin.

Option B aligns perfectly with this derived equation, confirming its correctness in the context of temperature conversion among the different scales.