NCERT · Class 12 · Physics · Ray Optics and Optical InstrumentsThe SI unit of lens power is:
Step-by-Step Solution
The power of a lens is defined as the reciprocal of its focal length in meters, and its SI unit is dioptre (D).
Detailed Options Breakdown
Option : Meter
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Ray Optics and Optical Instruments.
Option 1: Dioptre (Correct Answer)
Correct choice. Refer to the step-by-step verified solution guidelines above for details.
Option 2: Centimeter
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Ray Optics and Optical Instruments.
Option 3: Watt
Incorrect choice. This distractor represents a common misunderstanding of the core principles of Ray Optics and Optical Instruments.
💡 Study Guide: This question tests core syllabus concepts from Ray Optics and Optical Instruments. For formulas, key summaries, and mock exam reference guides, read the full Ray Optics and Optical Instruments Revision Notes.