| Date | May 2014 | Marks available | 1 | Reference code | 14M.1.HL.TZ1.32 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 32 | Adapted from | N/A |
Question
The de Broglie wavelength of an electron is equal to the wavelength of a photon that has energy E. What is the momentum of the electron?
A. \(\frac{E}{c}\)
B. \(\frac{E}{hc}\)
C. \(\frac{hc}{E}\)
D. \(\frac{{{m_e}{c^2}}}{{hE}}\)
Markscheme
A
Examiners report
A is the only answer with the correct units. So the rest can be discounted.
Syllabus sections
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