10 Jan 17 7:44 PM
some dimensionally consistent equations are sometime wrong whereas dimensionally incorrect equations are always wrong.This doesn't make a sense.If we have to find whether a equation is correct or not we have to use some other methods right??????

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an equation can't be correct always if it is dimensionaly right , however it can be used to rule out most of the incorrect ones if we do not know how to derive the correct one. it is highly useful to identify right equations during entarnce exams when equations cant be derived due to time constrains