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Energy Levels

Light from a ...

Question

Light from a discharge tube containing hydrogen atoms falls on the surface of a piece of sodium. The kinetic energy of the fastest photoelectrons emitted from sodium is $0.73 e V$ , The work function for sodium is $1.82 e V$ . Find the change in the angular momentum of the electron in the hydrogen atom in the above transition.

A

h / 2 π

.

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B

h / 3 π

.

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C

h / 4 π

.

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D

h / π

.

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Solution

The correct option is C $h / π$ .

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Q. Light from a discharge tube containing hydrogen atoms falls on the surface of a piece of sodium. The kinetic energy of the fastest photoelectrons emitted from sodium is

0.73 e V

, The work function for sodium is

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. Find the energy of the photons causing the photoelectric emissions.

Q. Light from a discharge tube containing hydrogen atoms falls on the surface of a piece of sodium. The kinetic energy of the fastest photoelectrons emitted from sodium is

0.73 e V

, The work function for sodium is

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Q. Light from a discharge tube containing hydrogen atoms falls on the surface of a piece of sodium. The kinetic energy of the fastest photoelectrons emitted from sodium is

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, The work function for sodium is

1.82 e V

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Q. Light from a discharge tube containing hydrogen atoms falls on the surface of a piece of sodium. The kinetic energy of the fastest photo-electrons emitted from sodium is

0.73 e V

. The work function for sodium is

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(b) the quantum numbers of the two levels involved in the emission of these photons.
(c) the change in the angular momentum of the hydrogen atom in the above transition, and
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and the mass of the hydrogen atom is

1.67 \times 10^{- 27} k g, 1 e V = 1.6 \times 10^{- 19} J

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