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Two electrons are moving with same speed...

Two electrons are moving with same speed v. One electron enters a region of uniform electric field while the other enters a region of uniform magnetic field, then after some time de Broglie wavelength of two are `lamda_1` andf `lamda_2`, respectively. Now,

A

`lambda_(1) = lambda_(2)`

B

`lambda gt lambda_(2)`

C

`lambda_(2) gt lambda_(1)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
We have work is done by only electric field. Thus if `bar(E)||vec(v),|vec(v)|` decreases, & thus momentum of electron decreases & vice-versa, while in magnetic field `|vec(v)|` remains constant.
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