The de Broglie wavelength of an electron in the $4^{\text {th }}$ Bohr orbit

The ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about 9. The spectral series are

For the Balmer series in the spectrum of H atom, $\bar{v}=\mathrm{R}_{\mathrm{H}}\left\{\frac{1}{\mathrm{n}_1^2}-\frac{1}{\mathrm{n}_2^2}\right\}$, the correct statements among (I) to (VI) are
(I) As wavelength decreases, the...

Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface?

The major product of the following reaction is

The region in the electromagnetic spectrum where the Balmar series lines appear is

The major product of the following reaction is

The shortest wavelength of H atom in the Lyman series is $\lambda_1$. The longest wavelength in the Balmar series of $\mathrm{He}^{+}$is

The de Broglie wavelength ( $\lambda$ ) associated with a photoelectron varies with the frequency ( $v$ ) of the incident radiation as, [ $v_0$...

Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect? (The Bohr radius is represented by a0)