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IGCSE Co-ordinated Sciences (9–1) 0973 · Physics · 73

0654.P3.3.02 — Know that all electromagnetic waves travel at 5 Know that the speed of electromagnetic the same high speed in a vacuum waves in a vacuum is : past paper questions

20 real questionsasked in 8 of the last 10 exam series2019–2026usually: State, Calculate, Explain, Write, Suggest

Real questions on 0654.p3.3.02 — know that all electromagnetic waves travel at 5 know that the speed of electromagnetic the same high speed in a vacuum waves in a vacuum is

The newest 20 of 20 written questions. Open one to see it on the real paper.

  1. 0973/31 · May/June 2026 · Q12a(i)[2]

    State the two other regions of the electromagnetic spectrum in which the Sun radiates most of its energy. 1.

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  2. 0973/31 · May/June 2026 · Q12a(iv)[1]

    Place ultraviolet radiation into the incomplete electromagnetic spectrum shown in Figure 12.1. increasing frequenc ~< g treq y gamma rays X-rays microwaves Figure 12.1

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  3. 0973/31 · October/November 2025 · Q11c[3]

    γ-radiation with a frequency of 6 × 10 19 Hz travels at a speed of 3 × 10 8 m / s. Calculate the wavelength of γ-radiation. State the unit of your answer. wavelength = unit

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  4. 0973/31 · October/November 2024 · Q12a[3]

    The speed of light is 3.0 × 10 8 m / s. Calculate the time taken for visible light to travel from the Sun to the Earth. time = s

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  5. 0973/31 · October/November 2024 · Q12b[3]

    Visible light is part of the electromagnetic spectrum. Fig. 12.1 shows an incomplete electromagnetic spectrum. radio waves J K visible light ultraviolet L gamma radiation Fig. 12.1 Identify regions J, K and L shown in Fig. 12.1. J increasing frequency K

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  6. 0973/31 · October/November 2024 · Q12c[2]

    Explain why energy is transferred through space from the Sun to the Earth by radiation and not by conduction or convection.

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  7. 0973/41 · October/November 2024 · Q12c(ii)[4]

    The lamp emits light with a wavelength of 7.5 × 10 –7 m. Calculate the frequency of the light emitted by the lamp. State the unit for your answer. frequency = unit 27 28 29 30 actinoids cerium 140 90 Th thorium 232 lanthanum 139 89 Ac actinium – 231 protactinium Pa 91 141 praseodymium Pr 238 uranium U 92 144 neodymium...

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  8. 0973/42 · May/June 2024 · Q3c(ii)[2]

    The radio waves emitted by the tracker unit have a frequency of 1.5 × 10 9 Hz. Calculate the wavelength of the radio waves. wavelength = m

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  9. 0973/31 · May/June 2023 · Q12c(iii)[1]

    Explain why it takes the same time for infrared and visible light to travel from the Sun to the Earth.

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  10. 0973/41 · October/November 2022 · Q12c(i)[1]

    State the speed of gamma radiation in a vacuum.

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  11. 0973/32 · May/June 2022 · Q3a(ii)[1]

    Write X-rays in the correct place in the incomplete electromagnetic spectrum shown in Fig. 3.1. increasing frequency γ-radiation visible light radio waves Fig. 3.1

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  12. 0973/41 · May/June 2022 · Q6c[3]

    The tidal power station uses a warning lamp to warn passing boats of its location. The lamp emits light with a wavelength of 4.0 × 10 –7 m. Calculate the frequency of the light. frequency = Hz

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  13. 0973/42 · May/June 2022 · Q9c(i)[1]

    State the speed of visible light in a vacuum.

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  14. 0973/42 · May/June 2022 · Q9c(ii)[3]

    γ‑rays and radio waves are also part of the electromagnetic spectrum. Place ticks (✓) in the boxes in Table 9.1 to show which statements are true for γ‑rays and radio waves. Table 9.1 γ‑rays radio waves is used in communication is used in medicine can cause cancer is higher frequency than visible light has a longer wav...

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  15. 0973/41 · October/November 2021 · Q3a[1]

    State the speed of electromagnetic waves in a vacuum.

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  16. 0973/41 · October/November 2021 · Q3b(i)[1]

    Write visible light in its correct position in the spectrum. ultraviolet infrared microwaves Fig. 3.1

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  17. 0973/41 · October/November 2021 · Q3b(ii)[1]

    State the form of electromagnetic radiation that has the highest frequency.

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  18. 0973/41 · May/June 2020 · Q9a(i)[1]

    State the speed at which visible light travels in a vacuum. speed = m / s

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  19. 0973/31 · May/June 2019 · Q9b(ii)[1]

    Suggest why the scientist hears the thunder later than she sees the lightning.

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  20. 0973/41 · May/June 2019 · Q6a(ii)[1]

    All electromagnetic waves travel at the same speed. State the speed of light in a vacuum. m / s

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What examiners said

A few candidates realised that the infrared and visible light both travel at the same speed.

— Examiner report, May/June 2023, 0973/31 Q12(c)(iii) (Cambridge)

This question required candidates to recall the speed of light, and then use this value to calculate the frequency of the wave. While many candidates correctly stated the speed of light, many used the speed of water calculated in 6(a)(ii). These candidates were awarded error carried forward marks for this question. The formula for wave speed was generally well known and candidates were able to rea...

— Examiner report, May/June 2022, 0973/41 Q6(c) (Cambridge)

Sound travelling slower than light was well known but some candidates suggested that sound travelled faster than light.

— Examiner report, May/June 2019, 0973/31 Q9(b)(ii) (Cambridge)

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0654.P3.3.02 — Know that all electromagnetic waves travel at 5 Know that the speed of electromagnetic the same high speed in a vacuum waves in a vacuum is — IGCSE Co-ordinated Sciences (9–1) 0973 past paper questions | AssessPro