A marine radar transmitter on a cargo vessel emits pulsed microwave radiation to detect nearby obstacles. The microwaves have a wavelength of 1.2 cm1.2\text{ cm}1.2 cm. The speed of electromagnetic waves in air is 3.0×108 m s−13.0 \times 10^8\text{ m s}^{-1}3.0×108 m s−1.
Calculate the frequency of the microwave radiation. Give your answer in hertz (Hz) in standard form.
Practise AQA GCSE Physics Electromagnetic waves with exam-style questions for Foundation and Higher tier. 52 questions covering Types of electromagnetic waves, Properties of electromagnetic waves 1, Properties of electromagnetic waves 2, Uses and applications of electromagnetic waves, Lenses (physics only), and Visible light (physics only), matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.