IGCSEPhysicsCambridge (CIE)Exam Questions3. WavesElectromagnetic Spectrum

Electromagnetic Spectrum (Cambridge (CIE) IGCSE Physics): Exam Questions

Exam code: 0625 & 0972

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1
1 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

    2
    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

      3
      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

      4
      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

      5
      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

      6
      1 mark

      Which part of the electromagnetic spectrum is used by a remote controller for a television?

      • infrared waves

      • microwaves

      • radio waves

      • visible light

      Choose your answer

      7
      1 mark

       Which statement correctly compares radio waves and X-rays?

      • Radio waves have a longer wavelength and a greater speed in a vacuum.

      • Radio waves have a longer wavelength and the same speed in a vacuum.

      • Radio waves have a shorter wavelength and a greater speed in a vacuum.

      • Radio waves have a shorter wavelength and the same speed in a vacuum.

      Choose your answer

      8
      1 mark

      Which statement is correct?

      • A remote controller emits microwave radiation.

      • A remote controller emits infrared radiation.

      • A remote controller emits ultrasound.

      • A remote controller emits ultraviolet radiation.

      Choose your answer

      9
      1 mark

      Which row correctly matches a region of the electromagnetic spectrum to its application?

      region

      application

      A

      microwaves

      medical scanning of bones

      B

      radio waves

      security marking

      C

      ultraviolet

      sterilising water

      D

      X-rays

      satellite television

        Choose your answer

        1
        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

        2
        1 mark

        Which type of electromagnetic wave is used in remote controls?

        • Microwaves

        • Visible light

        • Ultraviolet

        • Infrared

        Choose your answer

        3
        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

        4
        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

          5
          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

            6
            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

            7
            1 mark

            Extended tier only

            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

            8
            1 mark

            Which statement is correct?

            •   Infrared radiation is used in medical scanning of bones.

            • Microwaves are used in telecommunications.

            • Ultraviolet light is used in night vision photography.

            • X-rays are used in thermal imaging.

            Choose your answer

            9
            1 mark

            Extended Tier Only

            What is the speed of electromagnetic waves in a vacuum?

            • 3.0 cross times 104  cm/s

            • 3.0 cross times 105  km/s

            • 3.0 cross times 106  cm/s

            • 3.0 cross times1011  km/s

            Choose your answer

            10
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            1 mark

            Visible light has wavelengths in the range 4.0 cross times 10 to the power of negative 7 space space end exponent straight m space to space 7.0 space cross times space 10 to the power of negative 7 space end exponent straight m.What is the range of the frequencies of visible light?

            • 0.12 space Hz space to space 0.21 space Hz

            • 120 space Hz space to space 210 space Hz

            • 4.3 space cross times space 10 to the power of 11 space Hz space to space 7.5 space cross times space 10 to the power of 11 Hz

            • 4.3 space cross times space 10 to the power of 14 space Hz space to space 7.5 space cross times space 10 to the power of 14 space Hz

            Choose your answer

            11
            1 mark

            Which row correctly compares the wavelength, frequency and speed of ultraviolet radiation and infrared radiation in a vacuum?

            wavelength of ultraviolet compared to infrared

            frequency of ultraviolet compared to infrared

            speed of ultraviolet compared to infrared

            A

            longer

            lower

            same

            B

            shorter

            higher

            same

            C

            shorter

            lower

            higher

            D

            longer

            higher

            lower

              Choose your answer

              1
              1 mark

              Extended tier only

              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

              2
              1 mark

              Extended tier only

              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

              3
              1 mark

              Extended tier only

              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

              4
              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

                5
                1 mark

                Extended tier only

                Communications engineers need to choose whether to send signals as either digital or analogue.

                What is the main benefit of using digital signals?

                • The sound is heard more loudly

                • The signal may not always be clean

                • Signals do not need to be converted, saving time

                • Signals are clearer and travel more quickly

                Choose your answer