An alpha particle of mass 6.64 × 10-27 kg is travelling at a speed of 3.0 × 105 m s-1.
The table below shows the mass and speed of four particles, A, B, C, and D.
| Particle | Mass / kg\text{kg}kg | Speed / 105 m s−110^5 \text{ m s}^{-1}105 m s−1 |
|---|---|---|
| A | 4.98 × 10-27 | 3.0 |
| B | 8.30 × 10-27 | 1.5 |
| C | 9.96 × 10-27 | 2.0 |
| D | 3.32 × 10-27 | 4.0 |
Which particle has the same de Broglie wavelength as the alpha particle?
A
B
C
D
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.