Question
The angular momentum for the electron in Bohr's orbit is L. If the electron is assumed to revolve in second orbit of hydrogen atom, then the change in angular momentum will be:
BITSAT
Physics
Atomic Physics
2023
BITSAT 2023 (Memory Based Paper 2)
BITSAT Physics Question (2023) — Solution
Options
- A. L 2
- B. zero
- C. L
- D. 2L
Answer
C. L
Step-by-step solution
From the Bohr's quantization rule Angular momentum L = nh 2 , L _1= 1 . h 2 = L ( n=1 for first orbit) in ( n=2 for second orbit) L_2= 2 h 2 =2 L Hence, change in angular momentum L _2- L _1=2 ~L - L = L
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