The newest 10 of 6 written questions. Open one to see it on the real paper.
An application of the ultraviolet region of the electromagnetic spectrum is detecting fake bank notes. State an application of each of the following regions. microwave
See it on the paper →Thermal energy is transferred from the Sun to the Earth by infrared radiation with a frequency of 410 GHz. The speed of infrared radiation in space is 3.0 × 10 8 m / s. Calculate the wavelength of the infrared radiation. wavelength = m
See it on the paper →Electromagnetic radiation of wavelength 6.0 × 10 –7 m travels through space at a speed of 3.0 × 10 8 m / s. Calculate the frequency of the radiation. Include the unit in your answer. frequency = unit
See it on the paper →State the speed of electromagnetic waves in a vacuum. speed = m / s
See it on the paper →Use your answer to (b)(ii) to calculate the wavelength of the transmitted wave. wavelength = m
See it on the paper →State the speed of electromagnetic waves in a vacuum. (i)
See it on the paper →The helicopter transmits a radio signal vertically down to the ground below. The signal is reflected vertically upwards from the ground. The signal is received by the helicopter 3.3 × 10 – 6 s after it is transmitted. height = m Calculate the height of the helicopter above the ground.
See it on the paper →State the speed of infrared radiation in a vacuum. m / s
See it on the paper →The speed of visible light in a vacuum is 3 x 10 8 m / s. State the speed of infrared radiation in a vacuum. Explain your answer. speed of infrared radiation m / s explanation
See it on the paper →A laser emits a beam of red visible light of wavelength 635 × 10 –9 m. Calculate the frequency of the red visible light emitted by the laser. State the unit of your answer. frequency = unit
See it on the paper →Many candidates found this question challenging. The equation v = f × λ had to be rearranged to calculate the frequency. Also, many candidates found difficulty understanding the scientific notation of the wavelength and speed. As a result of both the equation rearrangement and dealing with the numbers, only a few candidates gained credit for this question. Only a few candidates stated Hz. Incorrec...
— Examiner report, May/June 2025, 0653/32 Q9(b) (Cambridge)
The relationship between wave speed, frequency and wavelength was frequently recalled and used correctly. Numerical answers that corrected to 0.86 (m) were accepted and an error carried forward from 8(b)(ii) was allowed.
— Examiner report, May/June 2025, 0653/41 Q8(b)(iii) (Cambridge)
Only a few candidates could recall the speed of light and record it with a correct unit.
— Examiner report, May/June 2025, 0653/43 Q9(c)(i) (Cambridge)
Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.