Question Detail

PHY 104 Photo Electric Emission Objective Question

Question

According to the Heisenberg Uncertainty Principle, which pair of variables cannot be simultaneously known with arbitrary precision?
Options
A Energy and momentum
B Position and wavelength
C Position and momentum
Correct Answer
D Frequency and time
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 14 states: 'We cannot have simultaneous knowledge of 'conjugate' variables such as position and momenta.' The formulas also show ΔxΔpx ≥ h/2.

Hint

The principle fundamentally deals with conjugate pairs of variables.

Question Info