Physics-
General
Easy
Question
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
- Increasing, increasing
- Increasing, decreasing
- Decreasing, same
- Same, Same
The correct answer is: Decreasing, same
. Since v 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
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