plumiIntensity of radiation: Edexcel International A Level Physics questions
Edexcel International A Level Physics past-paper questions on 2.3.3.1 Intensity of radiation, 2019–2025, with mark schemes and examiner’s reports where available.
Paper
All papers
Exam
All years
Calculations
Q18(b)(i)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ18(d)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDFLoading the question…
Open the full PDFQ3(d)(i)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ3(d)(ii)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDFLoading the question…
Open the full PDFYour answerQ18(c)(i)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ15(b)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFLoading the question…
Open the full PDFYour answerQ4(b)(i)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ4(b)(v)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDFQ16(c)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFLoading the question…
Open the full PDFYour answerQ16(a)(i)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ16(a)(ii)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDFQ17(c)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFLoading the question…
Open the full PDFYour answerQ3(c)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDFQ3(d)
The whole paper ↗Loading the start of the question…
Loading the question…
Open the full PDFQ18(b)
The whole paper ↗
Loading the start of the question…
Loading the question…
Open the full PDF
All 29 questions on Intensity of radiation, as a list
- June 2025, AS Unit 2, Q18(b)(i) (4 marks): Show that the total energy incident on the glass screen during this time is about 130 J. (4)
- June 2025, AS Unit 2, Q18(d) (2 marks): Suggest why the hardening time of the glue is reduced if the UV lamp is moved closer to the mobile phone screen. (2)
- January 2025, AS Unit 2, Q12 (3 marks): A solar cell of area 6.4 cm 2 is used to charge the battery in a watch. The battery will only charge when the power input to the solar cell is greater than 0.80
- January 2025, AS Unit 3, Q3(d)(i) (1 mark): State the direction in which light should be incident on the solar panel for maximum output power. (1)
- January 2025, AS Unit 3, Q3(d)(ii) (3 marks): The solar panels at a solar power station are mounted on motorised stands. (Source: © Daryna Andriianova/Shutterstock) Explain how this could increase the energ
- October 2024, AS Unit 2, Q1 (1 mark): Which of the following describes light intensity? A The energy of light incident on a surface per unit area B The power of light incident on a surface per unit
- June 2024, AS Unit 2, Q18(c)(i) (2 marks): The sensor has a known surface area. Explain why knowing the number of photons arriving each second at the sensor can not be used to determine the intensity of
- June 2024, Unit 5, Q15(b) (6 marks): At the top of the atmosphere, the intensity of radiation from the Sun is 1370 W m –2. As radiation passes through the atmosphere, 44% is absorbed or reflected b
- January 2024, AS Unit 2, Q8 (1 mark): At a distance d from a point source of light, the light intensity is I. Which of the following expressions gives the light intensity at a distance 2d from the s
- January 2024, AS Unit 3, Q4(b)(i) (2 marks): Explain why a graph of I against d should be a straight line through the origin. 2 (2)
- January 2024, AS Unit 3, Q4(b)(v) (2 marks): The student switched off the filament bulb. She recorded the intensity of the background light as 4 W m –2. The student then switched on the filament bulb. She
- October 2023, AS Unit 2, Q16(c) (4 marks): A solar cell array is placed on the roof of a house as shown. The area of the solar cell array is 8.7 m 2. The roof of the house slopes at an angle of 60° to th
- June 2023, AS Unit 2, Q9 (1 mark): Earth and Jupiter orbit the Sun, as shown. The distance from Earth to the Sun is 1.49 × 10 11 m. The distance from Jupiter to the Sun is 7.78 × 10 11 m. 11 m 7.
- January 2023, AS Unit 2, Q16(a)(i) (4 marks): Calculate the minimum efficiency of the panel of solar cells that will operate the pump. intensity of sunlight on solar cells = 1040 W m –2 (4) Minimum efficien
- January 2023, AS Unit 2, Q16(a)(ii) (2 marks): Suggest two reasons why the value calculated in (i) is the minimum efficiency that will operate the pump. (2)
- October 2022, AS Unit 2, Q17(c) (3 marks): The maximum intensity of sunlight at the Earth’s surface is about 1100 W m–2 . A student suggests that the intensity of light at a distance of 5.0 mm from an LE
- June 2022, AS Unit 2, Q3 (1 mark): When the distance between the Sun and the planet Mercury is 4.60 × 1010 m, the intensity of solar radiation at the surface of Mercury is 1.45 × 104 W m–2. Which
- June 2022, AS Unit 3, Q3(c) (2 marks): Sketch the relationship between I and d on the axes below. (2) I d
- June 2022, AS Unit 3, Q3(d) (3 marks): The student calculated the intensity of light incident on the LDR at each value of d. The output power of the filament lamp was 9.0 W. Calculate the intensity o
- January 2022, AS Unit 2, Q18(b) (4 marks): A light year is the distance travelled by light in one year. Sirius A is 8.60 light years from Earth. The intensity of radiation from Sirius A received on Earth
- October 2021, AS Unit 2, Q18(a) (3 marks): Calculate the intensity of solar radiation as it reaches ICESat-2. distance from the Sun to ICESat-2 = 1.50 × 1011 m power of the Sun = 3.83 × 1026 W (3) Intens
- June 2021, AS Unit 2, Q3 (1 mark): A light bulb with an efficiency of 12% is positioned 2.0 m above a light sensor. The intensity of light at the light sensor is 0.14 W m−2. Which of the followin
- January 2021, AS Unit 2, Q20(a) (3 marks): A typical smart meter emits radio waves with a power output of 1.00W. An intensity of radiation greater than 4.5 W m−2 is dangerous to people. A person stands 2
- October 2020, AS Unit 2, Q14(c)(i) (3 marks): Calculate the time taken for a potassium atom to absorb enough energy to release an electron. intensity of ultraviolet radiation = 38.0 mW m−2 area over which a
- January 2020, AS Unit 2, Q12(a)(i) (2 marks): Calculate the maximum energy received by the solar panels in one hour. maximum intensity of solar radiation at the Earth’s surface = 1100 Wm–2 area of Sahara De
- January 2020, AS Unit 2, Q12(a)(ii) (2 marks): Determine whether covering the Sahara Desert with solar panels would be able to generate enough electricity for the whole world. (2)
- January 2020, AS Unit 2, Q12(b) (2 marks): Sand storms are common in the Sahara Desert. Explain why sand storms reduce the power generated by the solar panels. (2)
- June 2019, AS Unit 2, Q13(a) (3 marks): Calculate the minimum distance between the Earth and the Sun. power of the Sun 3.83 × 1026 W (3) Minimum distance =
- June 2019, AS Unit 2, Q13(b) (3 marks): As Mars orbits the Sun, the intensity of radiation received at the top of its atmosphere varies from 491 W mí to 711 W mí. Explain two differences between the
Questions, mark schemes and examiner’s reports are © Pearson Edexcel, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? Edexcel International A Level Physics past papers.
The Plumi iPad app also offers exam-style questions with AI feedback on your handwritten working.