Q131 / 180 · KCET 2019 · Physics

If \( P, Q \) and \( R \) are physical quantities having different dimensions, which of the following
combinations can never be a meaningful quantity?

  • A
    \( \frac{P Q}{R} \)
  • Correct answer
    B
    \( \frac{P-Q}{R} \)
  • C
    \( \frac{P R-Q^{2}}{R} \)
  • D
    PQ - R

Solution

(B)
Principle of homogeneity

Hence, the correct answer is option: 'B'.

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