Physics B (Advancing Physics) H157: Waves and quantum behaviour Topical Past Paper Questions

(a) Fig. 6.1 shows a ray of red light passing from air into and through a glass block. The wavelength of the red light is 650nm and the speed of light in air is $ 3.0 \times 10^{8} \, m s^{-1} $. Fig. 6.1 $ \uwave{\text{idss}} $. speed = ..... m s^{-1} wavelength = ..... nm [2] (…

A diffraction grating has 300 lines per mm. It is to be used to measure the wavelengths of light emitted by a discharge tube, where a high voltage causes a low-pressure gas to emit light. The diagram shows a plan view of the diffraction grating (the grating lines run down into th…

The diagram shows an electron in an atom moving between two energy levels, causing a photon to be emitted. The energies of the two levels, measured relative to the lowest energy level in the atom, are shown. This photon is emitted by a laser which emits $ 3.4 \times 10^{17} $ ide…