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Photoelectric Effect

An electron i...

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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 2.75eV.If the stoppinh potential of the photoelectron is 10 eV then the value of n i

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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 eV. If the stopping potential of the photoelectron is 10 V, then the value of n is

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 eV, the stopping potential is estimated to be:

[Given: The energy of the electron in

n^{t h}

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

]

Q. The electrons in the hydrogen atom lumps 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

. Calculate the stopping potential (the energy of the electron in

n^{t h}

E_{n} = - 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 :

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