two physical quantities A and B have different dimensions. Which mathematical operation is possible?
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Answered by
51
if two physical quantities have different dimensions then we can multiply or divide these quantities. but we can't prefer addition or subtraction for these quantities.
I mean, If A and B are two different quantities .
then, A.B = correct operation.
A/B = correct operation.
A + B = incorrect operation.
and A - B = incorrect operation.
for instance, F is force and v is velocity. F and v are different quantities.
so, F ± v = invalid
but F.v = power ( valid ) [ force × velocity gives power ]
F/v = mass/time ( valid ) [ force = mass × rate of change of velocity ]
hence, two physical quantities A and B have different dimensions. multiplication and division are possible for theses quantities.
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4
Answer:
option C-a/b
Explanation:
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