A high-energy cosmic ray photon of wavelength 1.65 × 10-16 m undergoes pair production to create an exotic particle and its antiparticle. If the created particles have zero kinetic energy, what is the rest mass of the exotic particle?
Planck's constant, h=6.63×10−34 J sh = 6.63 \times 10^{-34} \text{ J s}h=6.63×10−34 J s Speed of light in a vacuum, c=3.00×108 m s−1c = 3.00 \times 10^8 \text{ m s}^{-1}c=3.00×108 m s−1
6.70×10−27 kg6.70 \times 10^{-27} \text{ kg}6.70×10−27 kg
1.34×10−26 kg1.34 \times 10^{-26} \text{ kg}1.34×10−26 kg
3.35×10−27 kg3.35 \times 10^{-27} \text{ kg}3.35×10−27 kg
6.03×10−10 kg6.03 \times 10^{-10} \text{ kg}6.03×10−10 kg
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.