An electron and a photon each have a wavelength 1.00 nm. Find

(i) their momenta,

(ii) the energy of the photon and
(iii) the kinetic energy of electron.

Solution

Given, wavelength, $lambda space equals space 1 space n m space equals space 1 cross times 10 to the power of negative 9 space end exponent m$
i) Momenta of electron = momenta of photon.
Therefore,
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ii) Energy of photon, E = $h nu space equals space h c over lambda equals h over lambda c space equals space p c$
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iii) Kinetic energy of electron, $straight E subscript straight k space equals 1 half m subscript e v squared space equals fraction numerator p squared over denominator 2 m subscript e end fraction$
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Wave Optics

An electron and a photon each have a wavelength 1.00 nm. Find

(i) their momenta,

(ii) the energy of the photon and
(iii) the kinetic energy of electron.

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For Daily Free Study Material Join wiredfaculty

Wave Optics

An electron and a photon each have a wavelength 1.00 nm. Find (i) their momenta, (ii) the energy of the photon and (iii) the kinetic energy of electron.

Some More Questions From Wave Optics Chapter

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

An electron and a photon each have a wavelength 1.00 nm. Find

(i) their momenta,

(ii) the energy of the photon and
(iii) the kinetic energy of electron.