Light travels at a speed of 1.8 × 108 m s-1 in a transparent plastic block.
In the plastic, the wavelength of the light is 4.5 × 10-7 m.
What is the frequency of the light?
2.5×10−15 Hz2.5 \times 10^{-15}\text{ Hz}2.5×10−15 Hz
1.2×10−2 Hz1.2 \times 10^{-2}\text{ Hz}1.2×10−2 Hz
81 Hz81\text{ Hz}81 Hz
4.0×1014 Hz4.0 \times 10^{14}\text{ Hz}4.0×1014 Hz
237 exam-style questions on CIE IGCSE Physics General properties of waves, covering General properties of waves. Each one has a worked solution and a mark scheme showing where the marks go.