A LevelPhysicsCambridge (CIE)Exam Questions1. Physical Quantities & UnitsPhysical Quantities

Physical Quantities (Cambridge (CIE) A Level Physics): Exam Questions

Exam code: 9702

1 hour22 questions

Select a download format for Physical Quantities

Scroll for more

Select an answer set to view for
Physical Quantities

Easy
Medium
Hard
1
Sme Calculator1 mark

Which definition is correct and uses only quantities rather than units?

  • Density is mass per cubic metre

  • Potential difference is energy per unit current

  • Pressure is force per unit area

  • Speed is distance travelled per second

Choose your answer

2
Sme Calculator1 mark

What is a reasonable estimate for the gravitational force acting on an adult person standing on the Earth?

  • 50 N

  • 300 N

  • 400 N

  • 700 N

Choose your answer

3
Sme Calculator1 mark

A physical quantity has the symbol V and the unit m3.

Which physical quantity does V represent?

  • Potential difference

  • Velocity

  • Pressure

  • Volume

Choose your answer

4
Sme Calculator1 mark

Which answer option gives a reasonable estimate of the number of seconds in a year?

  • 3×107

  • 5×105

  • 1×106

  • 7×108

Choose your answer

5
Sme Calculator1 mark

A physical quantity has the unit m s−2 and the symbol a.

What is the correct name for this quantity?

  • Activity of a radioactive source

  • Amplitude

  • Avogadro constant

  • Acceleration

Choose your answer

1
Sme Calculator1 mark

A student creates a table to show reasonable estimates of some physical quantities.

Which row is a reasonable estimate?

quantity

value

A

frequency of a radio wave

500 pHz

B

mass of an atom

500 μg

C

the Young modulus of a metal

500 kPa

D

wavelength of green light

500 nm

    Choose your answer

    2
    Sme Calculator    1 mark

    What is a reasonable estimate for the volume of 1 ml of water?

    • 0.1 cm3

    • 1 cm3

    • 10 cm3

    • 100 cm3

    Choose your answer

    31 mark

    Which row shows what all physical quantities must have?

    magnitude

    direction

    unit

    A

    ✗

    ✗

    ✓

    B

    ✓

    ✗

    ✓

    C

    ✓

    ✓

    ✗

    D

    ✓

    ✓

    ✓

      Choose your answer

      4
      Sme Calculator      1 mark

      An adult male stands with a litre carton of milk balanced on his head. 

      What is the best estimate of the gravitational potential energy of the milk carton?

      • 2 J

      • 20 J

      • 200 J

      • 2000 J

      Choose your answer

      5
      Sme Calculator      1 mark

      Which of the following is a reasonable estimate for the density of a sugar cube?

      • 0.01 kg m−3

      • 0.1 kg m−3

      • 10 kg m−3

      • 1000 kg m−3

      Choose your answer

      1
      Sme Calculator      1 mark

      Which row shows a reasonable estimate?

      quantity

      value

      A

      kinetic energy of a bus travelling on an expressway

      30 000 J

      B

      power of a domestic light bulb

      300 W

      C

      temperature of a hot oven

      300 K

      D

      volume of air in a car tyre

      0.03 m3

        Choose your answer

        2
        Sme Calculator        1 mark

        Which statement is incorrect by a factor of 100 or more?

        • Atmospheric pressure is about 1 × 105  Pa

        • Light takes 5 × 102 s to reach us from the Sun

        • The frequency of ultraviolet light is 3 × 1012 Hz

        • The life-span of a man is about 2 × 109 s

        Choose your answer

        3
        Sme Calculator        1 mark

        An adult person jumps from a wall which is 2 m high. They land without rebounding.

        What is the best estimate for the change in momentum of the person?

        • 4 × 100 kg m s–1

        • 4 × 101 kg m s–1

        • 4 × 102 kg m s–1

        • 4 × 103 kg m s–1

        Choose your answer

        4
        Sme Calculator        1 mark

        The diameter of a proton is approximately 1 × 10-15 m.

        Which estimate is reasonable for the time taken for light to cross the nucleus of a hydrogen atom?

        • 3 × 10−28 s

        • 3 × 10−24 s

        • 3 × 10−20 s

        • 3 × 10−16 s

        Choose your answer

        5
        Sme Calculator        1 mark

        The bottom of the Mariana Trench is estimated to be approximately 11 000 m below sea level.

        What is the best estimate of the total pressure at the bottom of the Mariana Trench?

        • 1 × 106 Pa 

        • 1 × 107 Pa 

        • 1 × 108 Pa 

        • 1 × 109 Pa 

        Choose your answer