Comprehensive solved notes on Chapter 1 Measurements for Class 11 Physics students under all Punjab Boards including PCTBB, PECTAA, and other Punjab boards like Lahore Board, Faisalabad Board, Multan Board, etc. Similar to high-quality notes provided in institutions like APS, IMCB Islamabad, but tailored for Punjab curriculum. Prepared by Hamdard Science Academy for the new course (Cantab publisher). Covers physical quantities, SI units, dimensions, errors, significant figures, precision, accuracy, and more. Includes solved examples, derivations, MCQs, short questions, long questions, numericals, and assignments. For complete guide, solutions, easy notes, and help, download the full PDF at http://hsanotes.com.
1. Physical Quantities in Chapter 1
Measurements All Punjab Boards Class 11 Physics
Physical quantity is property of material or phenomenon measured numerically with magnitude and unit.
Explanation: Foundation of physics, describe universe through numbers. Classified into base (length, mass, time) and derived (velocity, force, work).
Examples: Base – Length, Mass, Time; Derived – Velocity (Length/Time), Force (Mass × Acceleration), Work.
For more on physical quantities in chapter 1 measurements all Punjab boards class 11 physics, read the PDF.
2. International System of Units (SI) in Chapter 1 Measurements All Punjab Boards Class 11 Physics
SI is complete coherent set of units for standard measurements.
Explanation: Adopted 1960 for uniformity. Built on seven base units. Supplementary units: radian, steradian. Prefixes for large/small values, scientific notation for extremes.
For detailed explanations and short questions on SI units in chapter 1 measurements, check PDF solutions.
3. Errors in Measurement in Chapter 1 Measurements All Punjab Boards Class 11 Physics
Errors are uncertainties in measurements due to instruments or methods.
Types: Systematic (calibration), random (variations).
Accuracy: closeness to true value; precision: consistency.
Fractional/percentage uncertainties.
Solved Example: % uncertainty in volume of sphere if % in radius 5%: 15% (3 times).
Assignments and numericals solved in PDF for chapter 1 measurements all Punjab boards class 11 physics.
4. Significant Figures in Chapter 1 Measurements All Punjab Boards Class 11 Physics
Significant figures indicate precision of measurement.
Rules: Non-zero digits significant, zeros between, trailing after decimal.
Example: 3.67 mm has 3 significant figures.
Use PDF for more solved MCQs and long responses on significant figures in chapter 1 measurements.
5. Dimensions of Physical Quantities in Chapter 1 Measurements All Punjab Boards Class 11 Physics
Dimensions represent nature in base quantities [M, L, T].
Homogeneity principle: equation correct if dimensions same.
Example: Kinetic energy [ML²T⁻²].
Applications: check formulas, derive relations.
For applications and short questions, read PDF guide.
6. Dimensional Analysis in Chapter 1 Measurements All Punjab Boards Class 11 Physics
Analyze equations using dimensions.
Example: Ratio force to energy dimensions L⁻¹.
Dimensionless quantities: strain, refractive index, angles.
Solved problems in PDF.
7. Measuring Instruments in Chapter 1 Measurements All Punjab Boards Class 11 Physics
Vernier caliper, micrometer screw gauge.
Least count: Vernier 0.01 cm, screw gauge 0.01 mm.
Solved Example: Diameter with micrometer: MSR 3.5 mm + CSR 0.17 mm = 3.67 mm.
More in PDF.
Solved MCQs Chapter 1 Measurements All Punjab Boards Class 11 Physics
- Dimensions of force: (a) MLT⁻²
- Non-identical dimensions: (c) Moment of Inertia and moment of force
And more solved MCQs in PDF.
Short Questions and Responses Chapter 1 Measurements All Punjab Boards Class 11 Physics
1.6 Kinetic energy dimensions: ML²T⁻²
1.7 Significant figures in 100.0 m: 4
Full solved short questions in PDF.
Long Questions and Responses Chapter 1 Measurements All Punjab Boards Class 11 Physics
1.4 Explain physical quantities into dimensions, benefits.
Benefits: Check equation validity, derive relations.
Full solved long questions in PDF.
Solved Numericals and Assignments Chapter 1 Measurements All Punjab Boards Class 11 Physics
1.3 Length 18.3 cm, width 12.2 cm, area: 223 cm²
1.4 Sum masses 3.197 + 0.068 + 13.9 + 3.28 = 20.4 kg
Assignment: Density with uncertainty: 3.13 ± 0.06 g/cm³
Full solved numericals and assignments in PDF for easy notes and solutions.
For complete help, guide, and solutions on chapter 1 measurements all Punjab boards class 11 physics new course PCTBB PECTAA Cantab, visit http://hsanotes.com to read or download the PDF.
Keywords: chapter 1 measurements, all punjab boards class 11 physics notes, solved mcqs chapter 1 measurements, short questions chapter 1 measurements, long questions chapter 1 measurements, solved numericals chapter 1 measurements, assignments chapter 1 measurements, pctbb course physics, pectaa notes, punjab boards solved notes