Question

Physical quantity having different dimensions cannot be

Answer 1

Explanation:

The options (a) and (e) can never be meaningful quantities. According to the law of homogeneity of dimensions, the dimensions of the terms which are either "added or subtracted" must be equal. ... This indicates that Q cannot be subtracted from P and R cannot be added to Q as they are of different dimensions.

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Answer 2

Explanation:

.......cannot be meaningful.

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