Which of the following expressions is dimensionally correct?

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$T = t + 273.15 k$

$T = t + 273.15$

$T = t + 273.15^{0} C$

$T / K = t /^{\circ} C + 273.15$

answer is A.

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Detailed Solution

A physical manifestation must be dimensionally accurate as well. For instance, the following might be used to express the conversion of Celsius temperature to kelvin temperature:

The unit of 0c is °C, but that of T is K, therefore while this formula is numerically valid, it is not dimensionally right.

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