NCERT · Class 11 · Physics · Units and MeasurementsWhich of the following quantities is dimensionless?
Step-by-Step Solution
Strain is the ratio of change in dimension to original dimension, hence it is dimensionless.
Detailed Options Breakdown
Option : Velocity gradient
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Units and Measurements.
Option 1: Strain (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Planck's constant
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Units and Measurements.
Option 3: Universal gravitational constant
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Units and Measurements.
💡 Study Guide: This question tests core syllabus concepts from Units and Measurements. For formulas, key summaries, and mock exam reference guides, read the full Units and Measurements Revision Notes.