Physics

If $$L, M, N$$ are physical quantities with different dimensions, then which of the following combinations can never be a meaningful quantity?


ANSWER

$$\dfrac {L-M}{N}$$


SOLUTION
$$\dfrac{L-M} {N} $$ can never be a meaningful quantity because we can never subtract two quantities with different dimensions. 

For example think of subtracting 1 kg from 1m. It is fully absurd and has no meaning. 
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Single Correct Medium Published on 18th 08, 2020
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