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Standard XII
Physics
Threshold Frequency
What is the D...
Question
What is the De-Broglie wavelength of the heavier particle?
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Solution
The De-Broglie wavelength is given by,
λ
=
h
m
v
Where
m
is the mass of the particle,
v
is the velocity of the particle and
h
is the Planck's constant.
Thus, the De-Broglie wavelength depends on two factors, mass, and velocity.
If two particles move with the same velocity then the De-Broglie wavelength is inversely proportional to its mass.
That is, the mass of the particle will be its wavelength and vice-versa.
Hence,
the particle with a heavier mass will have less De-Broglie wavelength than the lighter mass particle.
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