O LevelPhysicsCambridgeExam Questions3. Waves3.3 Electromagnetic Spectrum

Electromagnetic Spectrum (Cambridge O Level Physics)

Exam Questions

2 hours31 questions

Select a question set to download for
3.3 Electromagnetic Spectrum

Select an answer set to view for
3.3 Electromagnetic Spectrum

Easy
Medium
Hard
1
Sme Calculator1 mark

The table below shows the entire electromagnetic spectrum. It runs in order of increasing frequency.

Three parts of the spectrum are missing.

radio waves

X

infrared 

visible light

Y

x-rays

Z

What are parts X, Y and Z?

 

X

Y

Z

A

ultraviolet

microwaves

gamma rays

B

microwaves

gamma rays

microwaves

C

gamma rays

ultraviolet

microwaves

D

microwaves

ultraviolet

gamma rays

    Choose your answer

    Did this page help you?

    2
    Sme Calculator    1 mark

    The table below shows the entire electromagnetic spectrum. It runs in order of increasing wavelength.

    Which region is microwaves?

    γ-rays

    A

    B

    C

    infrared

    D

    radio waves

      Choose your answer

      Did this page help you?

      3
      Sme Calculator      1 mark

      The electromagnetic spectrum is shown in the table below.

      γ-rays

      x-rays

      ultraviolet

      visible light

      infrared

      microwaves

      radio waves

      q3-easy-mcq-3-3-electromagnetics-spectrum-cie-igcse-physics

      Which word is missing from the box below the electromagnetic spectrum?

      • Wavelength

      • Speed

      • Frequency

      • Amplitude

      Choose your answer

      Did this page help you?

      4
      Sme Calculator      1 mark

      Which list shows the parts of the electromagnetic spectrum in order of decreasing wavelength?

      • γ-rays, X-rays, infrared

      • Radio waves, ultraviolet, microwaves

      • Microwaves, infrared, visible light

      • Ultraviolet, visible light, infrared

      Choose your answer

      Did this page help you?

      5
      Sme Calculator      1 mark

      Which of the following groups contains only electromagnetic waves?

      • Sound waves, γ-rays, X-rays.

      • γ-rays, microwaves, sound waves.

      • Radio waves, infrared waves, γ-rays.

      • Radio waves, sound waves, microwaves.

      Choose your answer

      Did this page help you?

      1
      Sme Calculator      1 mark

      Which of the following sentences about infrared waves is true?

      • They can be used to treat cancerous tumours.

      • They can be used to make images of bones, through the skin.

      • They can be used for cooking.

      • They are used to send communication signals to satellites.

      Choose your answer

      Did this page help you?

      2
      Sme Calculator      1 mark

      Which type of electromagnetic wave is used in remote controls?

      • Microwaves

      • Visible light

      • Ultraviolet

      • Infrared

      Choose your answer

      Did this page help you?

      3
      Sme Calculator      1 mark

      A forgery detector is used to check whether bank notes are genuine or counterfeit. A type of electromagnetic radiation is shone onto the banknote which makes special ink in the note glow.

      Which type of electromagnetic radiation is shone onto the banknote?

      • Ultraviolet

      • Infrared

      • Visible light

      • X-rays

      Choose your answer

      Did this page help you?

      4
      Sme Calculator      1 mark

      The table gives common uses of electromagnetic radiation.

      Which row correctly matches the type of electromagnetic radiation with its use?

       

      Detecting banknote forgery

      TV remote controllers

      Sterilising medical instruments

      A

      microwaves

      visible light

      microwaves

      B

      infrared

      infrared

      γ-rays

      C

      ultraviolet

      radio waves

      infrared

      D

      ultraviolet

      infrared

      γ-rays

        Choose your answer

        Did this page help you?

        5
        Sme Calculator        1 mark

        Visible, red light has a wavelength of around 700 x 10-7 m.

        Two other types of electromagnetic radiation, X and Y, have different wavelengths to the visible, red light.

        Wavelength of X = 400 x 10-7 m
        Wavelength of Y = 3.0 x 10-2 m

        Which types of radiation could X and Y be?

         

        X

        Y

        A

        visible blue light

        microwaves

        B

        x-rays

        ultraviolet

        C

        infrared

        radio waves

        D

        microwaves

        ultraviolet

          Choose your answer

          Did this page help you?

          6
          Sme Calculator          1 mark

          In what way are microwaves different from ultraviolet waves?

          • Ultraviolet waves travel faster than microwaves in a vacuum.

          • Microwaves have a longer wavelength than ultraviolet waves.

          • Microwaves have a higher frequency than ultraviolet waves.

          • Microwaves are longitudinal while ultraviolet waves are transverse.

          Choose your answer

          Did this page help you?

          7
          Sme Calculator          1 mark

          Which of the following types of electromagnetic radiation has the highest speed in a vacuum?

          • Microwaves

          • Radio waves

          • Visible light

          • None of the above

          Choose your answer

          Did this page help you?

          1
          Sme Calculator          1 mark

          Which of the following options shows the correct speed for electromagnetic waves in a vacuum?

          • 3.0 × 104 cm / s

          • 3.0 × 108 cm / s

          • 3.0 × 1010 cm / s

          • 3.0 × 108 km / s

          Choose your answer

          Did this page help you?

          2
          Sme Calculator          1 mark

          Mobile phone networks rely on electromagnetic radiation to transmit signals.

          Which of the following statements is correct?

          • Radio waves are used for mobile networks because they travel over long distances and easily penetrate walls

          • Microwaves are used for mobile networks because they can operate with a short aerial and easily penetrate walls

          • Infrared waves are used for mobile networks because they travel over long distances and are not damaging to soft tissue

          • Ultrasound waves are used for mobile networks because they can travel to the satellites in space

          Choose your answer

          Did this page help you?

          3
          Sme Calculator          1 mark

          Bluetooth devices rely on electromagnetic radiation to transmit signals.

          Which of the following statements is correct?

          • Visible light is used by Bluetooth-enabled devices because it undergoes total internal reflection in optical fibres

          • Gamma waves are used by Bluetooth-enabled devices because they penetrate easily through walls

          • Microwaves are used by Bluetooth-enabled devices because they can reach satellites in orbit as they are not absorbed by the ionosphere

          • Radio waves are used by Bluetooth-enabled devices because they transmit very well over short distances

          Choose your answer

          Did this page help you?

          4
          Sme Calculator          1 mark

          Which line in the table correctly identifies a use and a danger of the electromagnetic wave given in the first column?

            EM wave Uses Dangers
          A. gamma detection of cancers internal heating of body cells
          B. x-rays detecting false bank notes mutation or damage to body cells
          C. visible photography mutation or damage to body cells
          D. infrared thermal imaging skin burns

            Choose your answer

            Did this page help you?