What wavelength will result in the most accurate measurement of the momentum of an electron?
- Radio (correct answer)
- Red light
- X-ray
- Gamma-ray
- Infrared
Explanation: The Heisenberg Uncertainty Principle states that:
Since the uncertainty in the position is inversely proportional to the uncertainty in the momentum, we need to pick the longest wavelength. Of the options listed, radio has the longest wavelength.