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Pearson Edexcel International GCSE (9–1) · PHYSICS · Chapter

The Electromagnetic Spectrum

70 practice questions

Start practising (70 questions)

Topics covered

Practice questions

11–20 of 70

  1. Question 11

    3 marks · Normal

    Gamma rays can be harmful to medical staff working with them.

    (a)

    State one precaution that medical staff should take when working with gamma rays.

    [1 mark]
    (b)

    Explain why this precaution reduces the risk of harm.

    [2 marks]
    Answer and see the solution →

  2. Question 12

    2 marks · Normal

    Copy and complete the table for gamma rays.

    Possible harm and precautions for gamma rays
    Type of radiationPossible harmPrecautions
    Gamma rays
    Answer and see the solution →

  3. Question 13

    1 mark · Normal

    Which of the following is NOT a use of gamma rays?

    1. A.Treating cancer
    2. B.Sterilising food
    3. C.Taking photographs
    4. D.Sterilising surgical instruments
    Answer and check →

  4. Question 14

    3 marks · Normal

    Gamma rays are used to sterilise medical equipment.

    (a)

    Explain why gamma rays are suitable for sterilising materials inside sealed packages.

    [2 marks]
    (b)

    State one advantage of using gamma rays rather than boiling water for sterilising.

    [1 mark]
    Answer and see the solution →

  5. Question 15

    2 marks · Normal

    Explain why food stays fresher for longer after it has been exposed to gamma radiation.

    Answer and see the solution →

  6. Question 16

    3 marks · Normal

    Gamma rays are highly penetrating electromagnetic waves.

    (a)

    Describe what happens if a person is exposed to a large dose of gamma rays.

    [2 marks]
    (b)

    State one way to protect people from exposure to gamma rays in hospitals.

    [1 mark]
    Answer and see the solution →

  7. Question 17

    1 mark · Easy

    What is the speed of electromagnetic waves in a vacuum?

    Answer and see the solution →

  8. Question 18

    1 mark · Easy

    Which option gives the correct order of electromagnetic waves by increasing frequency?

    1. A.Radio waves, microwaves, visible light, X-rays
    2. B.Microwaves, radio waves, ultraviolet, gamma rays
    3. C.Ultraviolet, visible light, radio waves, X-rays
    4. D.X-rays, ultraviolet, visible light, gamma rays
    Answer and check →

  9. Question 19

    1 mark · Easy

    Which type of electromagnetic wave is used in medical X-ray imaging?

    Answer and see the solution →

  10. Question 20

    1 mark · Easy

    Which group of electromagnetic waves is visible to the human eye?

    1. A.Infrared
    2. B.Radio waves
    3. C.Ultraviolet
    4. D.Visible light
    Answer and check →