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NTA Abhyas JEE Main2020PhysicsUnits and DimensionsPractice

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

Options

  1. APQ − Q 2 R
  2. BPQ - R
  3. CPQ R
  4. DPR - Q 2 R

Correct answer

A. PQ − Q 2 R

Step-by-step solution

P - Q Q R Since P and Q have different dimensions, therefore, their subtraction is not possible

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