Physics-Physical Quantities
NEET Physics Physical Quantities MCQ Question
Type: MCQ-conceptual-Hard-Class 11
Which of the following statements regarding the dimensions of physical quantities is correct?
A
The dimensions of a physical quantity can be used to derive its numerical value.
B
Only quantities with identical dimensions can be added or subtracted.
C
Dimensional analysis can determine the numerical coefficients in equations.
D
The dimensions of a quantity can change based on the physical context.
Correct Answer
Option B
Detailed Explanation
Statement B is correct as stated in the provided context, which emphasizes that only quantities with the same dimensions can be added or subtracted. The other statements misinterpret the role of dimensions and dimensional analysis.
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