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An electron in the hydrogen atom jumps f...

An electron in the hydrogen atom jumps from excited state `n` to the ground state. The wavelength so emitted illuminates a photo-sensitive material having work function `2.75eV`. If the stopping potential of the photoelectron is `10V`, the value of `n` is

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An electron in nth excited state in a hydrogen atom comes down to first excited state by emitting ten different wavelength. Find value of n (an integer).

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Knowledge Check

  • The electron in the hydrogen atom jumps form excited state (n=3) to its ground state (n=1) and the photons thus emitted irradiate a photosenstive material. If the work function of the material is 5.1eV, the stopping potential is estimated to be: (The energy of the electron in nth state is E_(n)=-13.6//n^(2)eV )

    A
    `5.1V`
    B
    `12.1V`
    C
    `17.2V`
    D
    `7V`

  • When the electron of a hydrogen atom jumps from n = 4 to n = 1 state, the number of spectral lines emitted is

    A
    15
    B
    9
    C
    6
    D
    3

  • When the electron of a hydrogen atom jumps from n = 4 to n = 1 state, the maximum number of spectral lines emitted is

    A
    15
    B
    9
    C
    6
    D
    3

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