NEET2013Physics-Atomic Physics
NEET 2013 Physics Bohr Model MCQ Question
Type: MCQ-conceptual-Medium-Class 12
An electron in hydrogen atom makes a transition n₁ → n₂ where n₁ and n₂ are principal quantum numbers of the two states. Assuming Bohr’s model to be valid, the time period of the electron in the initial state is eight times that in the final state. The possible values of n₁ and n₂ are:
A
n₁ = 6 and n₂ = 3
B
n₁ = 8 and n₂ = 2
C
n₁ = 8 and n₂ = 1
D
n₁ = 4 and n₂ = 2
Correct Answer
Option B
Detailed Explanation
The time period in Bohr's model is proportional to n³. Given that T₁/T₂ = 8, we find (n₁/n₂)³ = 8, which gives n₁ = 8 and n₂ = 2.
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