What is the Kelvin temperature when Celsius is 0?

What is the Kelvin temperature when Celsius is 0?

• A. 32 K
• B. 0 K
• C. 100 K
• D. 273 K

Answer: (D)

The key idea is how Celsius and Kelvin relate. To convert from Celsius to Kelvin, add 273.15: K = C + 273.15. So at 0°C, the temperature in Kelvin is 0 + 273.15 = 273.15 K. In many basic contexts, this is rounded to 273 K, making it the closest option. The other values don’t fit: 0 K is absolute zero (-273.15°C), 32 K is about -241°C, and 100 K is about -173°C.

The key idea is how Celsius and Kelvin relate. To convert from Celsius to Kelvin, add 273.15: K = C + 273.15. So at 0°C, the temperature in Kelvin is 0 + 273.15 = 273.15 K. In many basic contexts, this is rounded to 273 K, making it the closest option. The other values don’t fit: 0 K is absolute zero (-273.15°C), 32 K is about -241°C, and 100 K is about -173°C.