A laser beam of wavelength λ0=632.8 nm\lambda_0 = 632.8\text{ nm}λ0=632.8 nm in a vacuum is incident on a block of flint glass with refractive index n=1.60n = 1.60n=1.60.
What are the frequency and wavelength of this light wave inside the glass block?
(Take the speed of light in a vacuum as c=3.00×108 m s−1c = 3.00 \times 10^8\text{ m s}^{-1}c=3.00×108 m s−1)
f=4.74×1014 Hzf = 4.74 \times 10^{14}\text{ Hz}f=4.74×1014 Hz, λ=396 nm\lambda = 396\text{ nm}λ=396 nm
f=4.74×1014 Hzf = 4.74 \times 10^{14}\text{ Hz}f=4.74×1014 Hz, λ=1012 nm\lambda = 1012\text{ nm}λ=1012 nm
f=2.96×1014 Hzf = 2.96 \times 10^{14}\text{ Hz}f=2.96×1014 Hz, λ=633 nm\lambda = 633\text{ nm}λ=633 nm
f=7.58×1014 Hzf = 7.58 \times 10^{14}\text{ Hz}f=7.58×1014 Hz, λ=396 nm\lambda = 396\text{ nm}λ=396 nm
43 exam-style questions on OCR GCSE Physics Wave behaviour. Each one has a worked solution and a mark scheme showing where the marks go.