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Engineering Physics · Q16

Quantum Mechanics

Engineering and GATE · Engineering Physics · question 16

Q16

Let L = (Lx, Ly, Lz) denotes the orbital angular momentum operators of a particle and let L+ = Lx + i Ly and L- = Lx - i Ly. The particle is in aneigen state of L2 and Lz eigen values ^2 ( l + 1 ) and l respectively. The expectation value of L+L- in this state is

Let = (Lx, Ly, Lz) denotes the orbital angular momentum operators of a particle and let L+ = Lx + i Ly and L- = Lx - i Ly. The particle is in aneigen state of L2 and Lz eigen values   and  respectively. The expectation value of L+L- in this state is
A.
Answer
B.
C.
zero
D.

Answer: Option A

Solution

Answer: Option A
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