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 $\left(E_1=-13.6 \mathrm{eV}\right)$ ____________.
- A4 : 1
- B8 : 1
- ✓2 : 1
- D16 : 1
