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Measurements and Uncertainties

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Standard Units and Symbols

Subtopic

Standard Units and Symbols under Measurements and Uncertainties for Grade 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is the correct multiplier for 'Tera'?

    A.

    10910^{9}

    B.

    101210^{12}

    C.

    101510^{15}

    D.

    101810^{18}

  2. 2.

    What is the SI unit for speed or velocity?

    A.

    km/hkm/h

    B.

    m/sm/s

    C.

    m/s2m/s^2

    D.

    cm/scm/s

  3. 3.

    Which of the following is equivalent to 1 mm21\ mm^2?

    A.

    10−3 m210^{-3}\ m^2

    B.

    10−6 m210^{-6}\ m^2

    C.

    10−4 m210^{-4}\ m^2

    D.

    10−2 m210^{-2}\ m^2

Download the worksheet for Measurements and Uncertainties - Standard Units and Symbols to practice offline. It includes additional chapter-level practice questions.

Random and Systematic Errors

Subtopic

Random and Systematic Errors under Measurements and Uncertainties for Grade 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In the context of the IB Physics syllabus, 'uncertainty' is a measure of:

    A.

    How wrong a measurement is.

    B.

    The range within which the true value is expected to lie.

    C.

    The skill of the experimenter.

    D.

    The cost of the equipment.

  2. 2.

    If a student wants to reduce the impact of their personal reaction time in a timing experiment, they should:

    A.

    Time a larger number of events (e.g., 2020 oscillations instead of 11).

    B.

    Use a stopwatch with more digits.

    C.

    Always start the watch at the same time of day.

    D.

    Measure the distance more accurately.

  3. 3.

    A systematic error is also sometimes referred to as:

    A.

    Statistical error

    B.

    Determinate error

    C.

    Indeterminate error

    D.

    Random deviation

Download the worksheet for Measurements and Uncertainties - Random and Systematic Errors to practice offline. It includes additional chapter-level practice questions.

Vector and Scalar Quantities

Subtopic

Vector and Scalar Quantities under Measurements and Uncertainties for Grade 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which list contains only scalar quantities?

    A.

    Mass, Temperature, Time

    B.

    Force, Acceleration, Velocity

    C.

    Weight, Energy, Power

    D.

    Displacement, Speed, Distance

  2. 2.

    Which of the following correctly identifies distance and displacement?

    A.

    Distance is scalar; displacement is vector.

    B.

    Distance is vector; displacement is scalar.

    C.

    Both are scalar.

    D.

    Both are vector.

  3. 3.

    Two vectors AA and BB are added together. The magnitude of the resultant vector is minimum when the angle between them is:

    A.

    180∘180^\circ

    B.

    0∘0^\circ

    C.

    90∘90^\circ

    D.

    45∘45^\circ

Download the worksheet for Measurements and Uncertainties - Vector and Scalar Quantities to practice offline. It includes additional chapter-level practice questions.

Propagation of Uncertainties

Subtopic

Propagation of Uncertainties under Measurements and Uncertainties for Grade 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If p=m/qp = m / q, and mm has a 3%3\% uncertainty while qq has a 2%2\% uncertainty, the uncertainty in pp is:

    A.

    1%

    B.

    5%

    C.

    6%

    D.

    1.5%

  2. 2.

    The side of a cube is 10.0±0.210.0 \pm 0.2 cm. What is the percentage uncertainty in the volume of the cube?

    A.

    0.2%

    B.

    2%

    C.

    4%

    D.

    6%

  3. 3.

    The uncertainty in a measurement 1.00±0.011.00 \pm 0.01 is 1%1\%. What is the uncertainty in the square of this measurement?

    A.

    0.01%

    B.

    1%

    C.

    2%

    D.

    4%

Download the worksheet for Measurements and Uncertainties - Propagation of Uncertainties to practice offline. It includes additional chapter-level practice questions.

Measurements and Uncertainties - Grade 11 Physics (IB) | Krit.club