On the celsius scale the absolute zero of temperature is at

Options

A. `0^(@)C`
B. `-32^(@)C`
C. `100^(@)C`
D. `-273.15^(@)C`

Answer

To find the absolute zero of temperature on the Celsius scale, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Absolute Zero**: Absolute zero is the lowest possible temperature where all molecular motion stops. It is defined as 0 Kelvin (K).

2. **Convert Kelvin to Celsius**: The relationship between the Celsius scale (°C) and the Kelvin scale (K) is given by the formula:
\[ K = °C + 273.15 \]

3. **Set Kelvin to Absolute Zero**: Since absolute zero is 0 K, we can set up the equation:
\[ 0 K = °C + 273.15 \]

4. **Solve for Celsius**: Rearranging the equation to find the temperature in Celsius:
\[ °C = 0 K - 273.15 \]
\[ °C = -273.15 \]

5. **Conclusion**: Therefore, on the Celsius scale, the absolute zero of temperature is at:
\[ -273.15 °C \]

### Final Answer:
The absolute zero of temperature on the Celsius scale is at **-273.15 °C**.

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