Question Detail

PHY 104 Photo Electric Emission Objective Question

Question

The document mentions an energy-time uncertainty relation. What is the mathematical representation of this principle?
Options
A ΔxΔp<sub>x</sub> ≥ ħ/2
B ΔEΔt ≥ ħ/2
Correct Answer
C hf = W + KE
D λ = h/p
Correct Answer

Option B is the correct answer.

Detailed Explanation

On page 14, under 'HEISENBERG UNCERTAINTY PRINCIPLE', it explicitly states: 'There is also an energy-time uncertainty relation ΔEΔt ≥ ħ/2'.

Hint

Look for the specific uncertainty relation involving energy and time.

Question Info