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Stefan boltzman law is applicable for heat transfer by

a.conduction
b.convection
c.radiation
d.All of these

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RRB Other Question
The power of single phase Ac circuit is

a.VI
b.VIcos(phi)
c.VIsin(phi)
d.none of these A person travels 12km in north,15 km in east then 15 km in west and then 18 km in south.How far is he from starting position?