Lesson 2.1.1

2.1.1 Physical quantities Quiz: OCR Physics, Unit 1

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 2.1.1, Physical quantities: 20 multiple choice questions for the OCR Physics (H156), Unit 1: Foundations of physics, written with Revision Ninja.

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The 20 questions

  1. What two components make up any physical quantity?

    • Magnitude and direction
    • Formula and symbol
    • Value and unit
    • Name and symbol

  2. Which of these is a physical quantity rather than a unit?

    • Kelvin
    • Acceleration
    • Metre
    • Second

  3. Which term best describes any physical quantity?

    • A chemical state
    • A theoretical concept
    • A unitless constant
    • A measurable property

  4. In the physical quantity 5 metres, what does the number 5 represent?

    • Numerical value
    • Unit symbol
    • Prefix symbol
    • Physical quantity

  5. Which is the most sensible estimate of the height of an ordinary classroom door?

    • About 2 m
    • About 20 km
    • About 0.02 m
    • About 200 m

  6. Which is the most sensible estimate of the mass of an average adult human?

    • About 0.07 kg
    • About 700 kg
    • About 7 g
    • About 70 kg

  7. Which is the most sensible estimate of the speed of a jogger?

    • About 30 m s^-1
    • About 300 m s^-1
    • About 0.03 m s^-1
    • About 3 m s^-1

  8. A quantity is recorded as 0.0045 kg. What is the same mass expressed in grams?

    • 0.0045 g
    • 45 g
    • 0.45 g
    • 4.5 g

  9. A speed of 72 km h^-1 expressed in m s^-1 is:

    • 259 m s^-1
    • 72000 m s^-1
    • 1.2 m s^-1
    • 20 m s^-1

  10. A length is 4.7 x 10^-6 m. Written using a prefix, the length is:

    • 4.7 nanometres (4.7 nm)
    • 4.7 millimetres (4.7 mm)
    • 4.7 micrometres (4.7 μm)
    • 47 micrometres (47 μm)

  11. A volume of 2.5 cm^3 is equal to how many m^3?

    • 2.5 x 10^-2 m^3
    • 2.5 x 10^6 m^3
    • 2.5 x 10^-3 m^3
    • 2.5 x 10^-6 m^3

  12. A mass of 3.2 x 10^4 kg expressed in tonnes, where 1 tonne = 1000 kg, is:

    • 0.32 tonnes
    • 3.2 tonnes
    • 32 tonnes
    • 320 tonnes

  13. A wire has a diameter of 0.85 mm. Its diameter in micrometres is:

    • 8500 μm
    • 85 μm
    • 0.85 μm
    • 850 μm

  14. A time interval of 1.5 x 10^-7 s expressed in nanoseconds is:

    • 1500 ns
    • 150 ns
    • 15 ns
    • 0.15 ns

  15. A speed of 15 cm s^-1 expressed in m s^-1 is:

    • 0.015 m s^-1
    • 0.15 m s^-1
    • 150 m s^-1
    • 1.5 m s^-1

  16. Estimate the number of seconds in one day, giving your answer to one significant figure in standard form.

    • 9 x 10^4 s
    • 9 x 10^3 s
    • 8 x 10^3 s
    • 9 x 10^5 s

  17. A length is calculated as 0.00000036 m. Written with a suitable prefix, the length is:

    • 36 μm
    • 360 nm
    • 3.6 mm
    • 3.6 μm

  18. A typical 330 ml drink can has a total mass of roughly what value?

    • About 0.35 kg
    • About 35 kg
    • About 0.035 kg
    • About 3.5 kg

  19. A student records a speed as 12 without any other information. What is missing?

    • The formula
    • The direction
    • The unit
    • The numerical value

  20. Which is the most sensible estimate of the thickness of a sheet of A4 paper?

    • About 10 mm
    • About 1 m
    • About 0.1 mm
    • About 0.001 mm

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