Skip to main content
Super TutorResources
Chapter 1 of 14
Chapter Summary

Units and Measurements — Chapter Summary

CBSE · Class 11 · Physics

Summary of Units and Measurements for CBSE Class 11 Physics. Part of the CBSE Class 11 Physics syllabus. Measurement compares a physical quantity.

147 questions72 flashcards5 concepts

Interactive on Super Tutor

Studying Units and Measurements? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for chapter summary and more.

Try Super Tutor — Free

Free trial, no card needed.

Overview

Measurement compares a physical quantity with a standard unit. Physics uses a small set of base quantities and base units to describe all other quantities. The SI system is the internationally accepted system and includes seven base units. Measured values must be written with proper significant figu

Key Concepts

Measurement of any physical quantity involves

Measurement of any physical quantity involves comparison with a basic, arbitrarily chosen, internationally accepted reference standard called unit. Th

The fundamental or base quantities

The fundamental or base quantities are length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity. T

Quantities obtained from base quantities

Quantities obtained from base quantities are derived quantities, and their units are derived units.

The SI system is the internationally

The SI system is the internationally accepted system of units. It was developed by BIPM in 1971 and revised by the General Conference on Weights and M

Radian and steradian are dimensionless SI

Radian and steradian are dimensionless SI-recognised units. The radian is used for plane angle and the steradian for solid angle.

Learning Objectives

  • Understand the meaning of measurement, unit, base unit, derived unit, and system of units
  • Recognise the SI system and its seven base units
  • Use commonly retained units such as minute, hour, degree, litre, tonne, bar, and others
  • Apply rules of significant figures in measurements and calculations
  • Round off values correctly and understand relative error

Frequently Asked Questions

What are the important topics in Units and Measurements for CBSE Class 11 Physics?
Key topics in Units and Measurements include Physical Quantities, Units, and Systems of Units, SI Base Units and Retained Units, Significant Figures and Scientific Notation, Rules for Rounding Off and Error Handling. Study these first, then practise questions on each for Class 11 exams.
How should I revise Units and Measurements for Class 11 exams?
Learn the core ideas first, then work through the 147 practice questions on Units and Measurements. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Units and Measurements

All CBSE Class 11 Physics Chapter Summary

For serious students

Get the full Units and Measurements chapter — start free.

Quizzes, flashcards, an AI doubt solver and a study plan for CBSE Class 11 Physics. Free to start, no card needed.

Try Super Tutor Free
Try this chapter free