Question

If the ratio of celcius to kelvin reading is $4$, then the reading of Kelvin scale is____

• A. $-91K$
• B. $373K$
• C. $91K$
• D. $1092K$

Answer 1

The correct option is A

$-91K$

Step 1: Given information

We know the relation between the Kelvin scale and the Celsius scale.

We denote the Kelvin scale by K and Celsius scale by C.

We know the relationship between them $K=C+273.15$

We are given that ratio $\frac{C}{K}=4$

Step 2: Calculate K

So, $\frac{K-273.15}{K}=4$

Or, $K-273.15=4K$

Or, $3K=-273.15$

Or, $K=-91.05$

So the correct answer is (A) $-91K$