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An electron is moving with an initial ve...

An electron is moving with an initial velocity `vecv=vecv_(0) hati` and is in a uniform magnetic field `vecB=B_(0) hatj`.
Then its de Broglie wavelength

A

decrease with time

B

remains constant

C

increase and decrease periodically

D

increases with time

Text Solution

Verified by Experts

The correct Answer is:
B
As the particle moves in a circular path in the magnetic filed , the kinetic energy / speed does not change , so momentum does not change
`lamda =(h)/(p) =` constant
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