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Physical World and Measurement

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

Units of Measurement

Subtopic

Units of Measurement under Physical World and Measurement for Grade 11 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    The radius of a certain atom is approximately 0.5×10−100.5 \times 10^{-10} m. What is the order of magnitude of this radius?

    A.

    10−1010^{-10} m

    B.

    10−1110^{-11} m

    C.

    10−910^{-9} m

    D.

    10−1210^{-12} m

  2. 2.

    Which of the following represents the correct dimensional formula for Pressure?

    A.

    [ML−1T−2][ML^{-1}T^{-2}]

    B.

    [MLT−2][MLT^{-2}]

    C.

    [ML2T−3][ML^{2}T^{-3}]

    D.

    [ML−2T−2][ML^{-2}T^{-2}]

  3. 3.

    A student measures the thickness of a wire as 0.0070.007 m. How many significant figures are present in this measurement?

    A.

    44

    B.

    11

    C.

    33

    D.

    22

Download the worksheet for Physical World and Measurement - Units of Measurement to practice offline. It includes additional chapter-level practice questions.

Dimensional Analysis

Subtopic

Dimensional Analysis under Physical World and Measurement for Grade 11 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following pairs of physical quantities has the same dimensions?

    A.

    Stress and Strain

    B.

    Density and Relative Density

    C.

    Work and Power

    D.

    Impulse and Momentum

  2. 2.

    What is the dimensional formula for the frequency of a vibrating string?

    A.

    [M0L0T−1][M^0L^0T^{-1}]

    B.

    [M0L0T1][M^0L^0T^1]

    C.

    [M1L0T−1][M^1L^0T^{-1}]

    D.

    [M0L1T−1][M^0L^1T^{-1}]

  3. 3.

    The dimensional formula for Work is identical to the dimensional formula for which of the following physical quantities?

    A.

    Power

    B.

    Force

    C.

    Torque

    D.

    Linear Momentum

Download the worksheet for Physical World and Measurement - Dimensional Analysis to practice offline. It includes additional chapter-level practice questions.

Errors in Measurement

Subtopic

Errors in Measurement under Physical World and Measurement for Grade 11 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If the length of a rod is measured as L=2.35±0.01L = 2.35 \pm 0.01 cm, the value 0.010.01 cm represents the:

    A.

    Relative error

    B.

    Absolute error

    C.

    Percentage error

    D.

    Mean error

  2. 2.

    Which of the following quantities is dimensionless and has no units?

    A.

    Absolute error

    B.

    Mean absolute error

    C.

    Relative error

    D.

    Least count

  3. 3.

    The number of significant figures in the measurement 0.0070500.007050 m is:

    A.

    3

    B.

    4

    C.

    5

    D.

    6

Download the worksheet for Physical World and Measurement - Errors in Measurement to practice offline. It includes additional chapter-level practice questions.

Physical World and Measurement - Class 11 Physics (ICSE) | Krit.club