What is the S.I. unit of work or
energy?
कार्य या ऊर्जा की एस.आई. इकाई क्या है?
kgm/s2
kgm2/s2
kgm/s2
kgm3/s2
kgm2/s2
We know that,
Unit of force is 
and the unit of
displacement is m
Hence, the unit of work is,
Similarly, the unit of energy can also
be derived as,
Potential
energy = mgh
Here, Unit of mass = kg
Unit of gravitational acceleration 
Unit of height = m
Hence, unit of potential energy (mgh) 
Hence, the correct option is (B).
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