NEET Physics Physical Quantities MCQ Question
Which of the following combinations of statements about physical quantities is correct?
Physical quantities can only be added if they have the same dimensions. | The dimensional formula of speed is [M° L T -1]. | Dimensional analysis is useful for checking the homogeneity of equations.
All physical quantities can be added together regardless of their dimensions. | The dimensional formula of force is [M L T -2]. | Dimensional analysis is irrelevant in physics.
Only quantities with the same units can be multiplied. | The dimensional formula of mass density is [M L –3 T 0]. | Equations do not need to have the same dimensions on both sides.
Dimensional analysis can help derive relationships between physical quantities. | The dimensional formula of acceleration is [M° L T –2]. | Physical quantities represented in equations may have different dimensions.
Correct Answer
Detailed Explanation
Option A includes correct statements about physical quantities, their dimensions, and the role of dimensional analysis, which aligns with the NCERT context on checking dimensional consistency and understanding physical quantities.
Found an issue with this question?