(a) State Heisenberg's Uncertainty Principle. (b) State one phenomenon that can only be explained in terms of the wave nature of light.
Question 1 Report
(a) State Heisenberg's Uncertainty Principle.
(b) State one phenomenon that can only be explained in terms of the wave nature of light.
Answer Details
(a) Heisenberg's Uncertainty Principle
It is impossible to determine simultaneously, with unlimited (perfect) accuracy, both the exact position and the exact momentum of a particle. The more precisely one is known, the less precisely the other can be known. Mathematically:
\[ \Delta x \cdot \Delta p \;\geq\; \frac{h}{4\pi} \]where \(\Delta x\) is the uncertainty in position, \(\Delta p\) the uncertainty in momentum and \(h\) Planck's constant.
(b) A phenomenon explained only by the wave nature of light: the interference of light (for example the bright and dark fringes in Young's double-slit experiment). Diffraction and polarization of light are also acceptable answers.
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