An electron is moving through a field. It is moving (i) opposite an electric field (ii) perpendicular to a magnetic field as shown. For each situation the de_Broglie wave length of electron
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a
Increasing, increasing
b
Increasing, decreasing
c
Decreasing, same
d
Same, same
answer is C.
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Detailed Solution
λ=hmv. Since y is increasing in case (i), but it is not changing in case (ii). Hence, in the first case de-Broglie wavelength will change, but it second case, it remain the same