An electron has a de Broglie wavelength equal to the wavelength of visible light.
What is the best estimate of the momentum of this electron?
10−34 kg m s−110^{-34} \text{ kg m s}^{-1}10−34 kg m s−1
10−27 kg m s−110^{-27} \text{ kg m s}^{-1}10−27 kg m s−1
10−22 kg m s−110^{-22} \text{ kg m s}^{-1}10−22 kg m s−1
10−19 kg m s−110^{-19} \text{ kg m s}^{-1}10−19 kg m s−1
26 exam-style questions on OCR A A Level Physics Quantum physics, covering Photons, The photoelectric effect, and Wave–particle duality. Each one has a worked solution and a mark scheme showing where the marks go.