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The frequency of light emitted for the transition n = 4 to n = 2 of `He^+` is equal to the transition in H atom corresponding to which of the following
A. |
n = 3 to n = 1 |
B. |
n = 2 to n = 1 |
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C. |
n = 3 to n = 2 |
D. |
n = 4 to n = 3 |
Thus, correct answer is (b)