Question:easy

Find the value of $-197^\circ\text{C}$ temperature in Kelvin.

Show Hint

Always remember that the Kelvin scale starts at absolute zero ($0\text{ K}$) and cannot have negative values. If your final calculated Kelvin temperature is negative, you've made an arithmetic error!
Updated On: Jun 8, 2026
  • 47 K
  • 76 K
  • 470 K
  • 760 K
Show Solution

The Correct Option is B

Solution and Explanation

Step 1: Know the two scales.
The Celsius scale and the Kelvin scale both measure temperature, but they start counting from different points. Kelvin starts from absolute zero, the coldest possible temperature.
Step 2: Write the bridge rule.
To go from Celsius to Kelvin you simply add $273$ to the Celsius reading. In short, $K = {}^\circ C + 273$.
Step 3: Note what we are given.
The temperature given to us is $-197\,{}^\circ C$. The minus sign just means it is very cold, well below the freezing point of water.
Step 4: Put the value into the rule.
$K = -197 + 273$.
Step 5: Do the simple arithmetic.
Adding a negative number is the same as subtracting, so $273 - 197 = 76$. That gives us $76\,K$.
Step 6: Read off the answer.
So $-197\,{}^\circ C$ is the same warmth as $76\,K$. This matches option 2.
\[ \boxed{76\ \text{K}} \]
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