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An electron in the hydrogen atom jumps from excited state n to the ground state.The wavelength so emitted illuminates a photosensitive material having work function 2.75 EV.If the stopping potential of photoelectron is 10 V,then the value of n is?

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Q. An electron in the hydrogen atom jumps from excited state

n

to the ground state. The wavelength so emitted illuminates a photosensitive material having work function

2.75 e V

. If the stopping potential of the photoelectron is

10 V

n

Q. An electron in the hydrogen atom jumps from excited state 'n' to the ground state. The wavelength of the photoelectron illuminates a photo-sensitive material that has a work function -

ω

(in eV). The stopping potential of the photoelectron is found to be 10 eV. In a sample, electrons fall from 'n' and it is found only 2 lines belong to the visible range. Find value of the work function

ω

Q. The electron in the hydrogen atom jumps from excited state (

n = 3

) to its ground state (

n = 1

) and the photons thus emitted irradiate a photosensitive material. If the work function of the material is

5.1 e V

, the stopping potential is estimated to be (the energy of the electron in

n^{t h}

E_{n} = \frac{13.6}{n^{2}} e V)

Q. Monochromatic radiation emitted when electron on hydrogen atom jumps from first excited to the ground state irradiates on a photosensitive material. The stopping potential is measured to be

3.57 V

. The threshold frequency of the material is :

Q. Monochromatic radiation is emitted when the electron in hydrogen atom jumps from the first excited state to the ground state. It is incident on a photosensitive material. The stopping potential is measured to be

3.57

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. The threshold frequency of the material is

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