Q122 / 125 · BITSAT 2010 · Physics

Hydrogen atom in ground state is excited by a monochromatic radiation of $\lambda=975 \AA$. Number of spectral lines in the resulting spectrum emitted will be

  • A
    3
  • B
    2
  • Correct answer
    C
    6
  • D
    10

Solution

Number of spectral lines $=\frac{\mathrm{n}(\mathrm{n}-1)}{2}=6$

Hence, the correct answer is option: 'C'.

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