Question

If the temperature of an object is 268 K, it will be equivalent to (a) â 50°C
(b) + 50°C
(c) 368°C
(d) â 25°C

Answer 1

-5°C

Explanation:

Given that the temperature of an object is 268 K.

We are required to change this into the celsius scale to match the options.

The relation we have between celsius and kelvin scale is,

$\frac{C}{100}=\frac{K-273}{100}$

Now that we have the relation let us substitute the value of K into this ,

$\frac{C}{100}=\frac{268-273}{100}\\\\\frac{C}{100}=\frac{-5}{100}\\ \\C=-5$

Hence the celsius temperature equivalent to 268 K is -5°C.

Answer 2

Answer is Option (a)

Explanation:

We know that,  

• Temperature in kelvin would becomes equivalent to temperature in celsius after deducting 273 from kelvin.

Temperature in Kelvin -273 = Temperature in Celsius

And oppositely,

Temperature in Celsius + 273 = Temperature in Kelvin

Kelvin - 273 = Celsius

Here, the given temperature is 268  K

• So, Celsius = 268 - 273 °C

Celsius = - 5°C

So, Answer is - 5°C