An exhibition designer is testing a decorative acrylic block for a light installation.
Why is using a broad, thick beam of light less likely to give accurate refraction measurements than using a highly narrowed beam?
For a specific angle of incidence, the designer measures the angle of refraction three times. The measurements are:
19∘,24∘,23∘ 19^\circ, \quad 24^\circ, \quad 23^\circ 19∘,24∘,23∘Calculate the mean angle of refraction.
The designer places a blue filter in front of a white spotlight so that only blue light passes through. Complete the following sentence: "When white light is incident on the blue filter, all colours of the visible spectrum except for blue are ___________ by the filter."
Write down the equation which links wave speed (vvv), frequency (fff), and wavelength (λ\lambdaλ).
The speed of light in air is 3.0×108 m/s3.0 \times 10^8 \text{ m/s}3.0×108 m/s. The frequency of this blue light is 6.25×1014 Hz6.25 \times 10^{14} \text{ Hz}6.25×1014 Hz. Calculate the wavelength of this blue light in air.
29 exam-style questions on AQA GCSE Physics 6.2 Electromagnetic waves, covering 6.2.1 Types of electromagnetic waves, 6.2.2 Properties of electromagnetic waves 1, 6.2.3 Properties of electromagnetic waves 2, 6.2.4 Uses and applications of electromagnetic waves, 6.2.5 Lenses, and 6.2.6 Visible light. Each one has a worked solution and a mark scheme showing where the marks go.