Practice question

MCQ

Question

According to dimensional analysis, what must be true for two physical quantities to be added or subtracted?

Options

Choose one · Correct answer highlighted

They must have the same dimensions Correct They must have the same SI units They must be dimensionless They must have different dimensions

Explanation

From Section 1.6.1: Physical quantities can only be added or subtracted if they have the same dimensions (principle of homogeneity). This follows from NCERT principle where relation explains outcome clearly for students.

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