MCQ
If $\lambda_1$ and $\lambda_2$ are de-Broglie wavelengths for electrons in first and second Bohr orbits in hydrogen atom, then the ratio $\lambda_2$ to $\lambda_1$ is $\left(E_1=-13.6 \mathrm{eV}\right)$ ____________.
  • A
    4 : 1
  • B
    8 : 1
  • 2 : 1
  • D
    16 : 1

Answer

Correct option: C.
2 : 1
C

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