The telemetry signal from a Martian rover travels a distance of 7.50 × 1010 m to reach Earth.
Electromagnetic waves take 250 s to travel this distance.
A green laser on the rover operates at a wavelength of 520 nm.
Calculate the frequency of the green laser light, using only the data provided.
64 exam-style questions on Edexcel GCSE Physics 4.1 Wave properties, covering 4.1.1 Waves transfer energy and information, 4.1.2 Frequency, wavelength, amplitude, period and wavefronts, 4.1.3 Longitudinal and transverse waves, 4.1.4 The wave speed equations, 4.1.5 Measuring wave velocity, and 4.1.6 Calculating depth or distance from waves. Each one has a worked solution and a mark scheme showing where the marks go.