Tag: fundamental and derived units

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Multiple choice physics measurements and units some examples of derived units fundamental and derived quantities fundamental and derived units

The $SI$ unit of specific heat capacity is $J\ kg^{-1}K^{-1}$.
What is the unit of specific heat capacity expressed in $SI$ base units?

  1. $ms^{-2}K^{-1}$
  2. $kgms^{-2}K^{-1}$
  3. $m^{2}s^{-2}K^{-1}$
  4. $kg m^{2}s^{-2}K^{-1}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
we know that J is the unit of work done 
So,
$J = kgm^2s^{-2} $
$\implies Jkg^{-1}K^{-1}= kgm^2s^{-2} \times kg^{-1}K^{-1}$
$\implies Jkg{-1}K^{-1}= m^2s^{-2}K^{-1}$
 
So, option C is correct answer.