Question

Find the value of \(-197^\circ C\) temperature in Kelvin.

• A. 47 K
• B. 76 K
• C. 470 K
• D. 760 K

Hint:

Always add 273 (or 273.15 for precision) to Celsius to get Kelvin. Negative Celsius values still yield positive Kelvin values as long as they are above absolute zero (\(-273.15^\circ C\)).

Answer 1

The Correct Option is B

Step 1: Understand the task.
We must change a temperature of $-197$ degrees C into the Kelvin scale.

Step 2: The conversion rule.
Kelvin and Celsius differ by a fixed shift: $T_K = T_C + 273.15$, which we usually round to $+273$.

Step 3: Drop in the value.
$T_K = -197 + 273$.

Step 4: Do the arithmetic.
$-197 + 273 = 76$.

Step 5: Check with the exact shift.
Using $273.15$ gives $76.15$ K, which still rounds to $76$ K, so we are safe.

Step 6: State the answer.
The temperature is $76$ K, which is option (B).
\[ \boxed{T = 76\ \text{K}} \]