JEE Mains · Physics · STD 12 - 12. atoms
\(X\) different wavelengths may be observed in the spectrum from a hydrogen sample if the atoms are exited to states with principal quantum number \({n}=6\) ? The value of \({X}\) is ..... .
- A \(11\)
- B \(15\)
- C \(10\)
- D \(8\)
Answer & Solution
Correct Answer
(B) \(15\)
Step-by-step Solution
Detailed explanation
No. of different wavelengths \(=\frac{{n}({n}-1)}{2}\) \(=\frac{6 \times(6-1)}{2}=\frac{6 \times 5}{2}=15\)
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