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Quantum Numbers

The energy of...

Question

The energy of the photons causing the photoelectric emission is

A

2.55 e V

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B

0.73 e V

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C

1.82 e V

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D

Information insufficient

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Solution

The correct option is C $2.55 e V$
Given, work function for Sodium is $1.82 e V$ and $K . E$ of fastest electron emitted is $0.73 e V$ .
Total energy incident on Sodium is $2.55 e V .$

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Similar questions

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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Q. Light from a discharge tube containing hydrogen atoms falls on the surface of a piece of sodium. The kinetic energy of the fastest photoelectron emitted from sodium is 0.73 eV. The work function for sodium is 1.82 eV. Find the energy of the photons causing the photoelectric emission.

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