An electron is moving with an initial velocity 
and is in a magnetic field 
. Then, it's de-Broglie wavelength:
Text Solution
Verified by ExpertsThe correct answer is:
A
Given, 
Force on moving electron due to magnetic field is,
As this force is perpendicular to v and B, so the magnitude of v will not change, i.e., momentum ( 
) will remain constant in magnitude. Hence, de-Broglie wavelength 
remains constant.
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