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An electron in an electron microscope wi...

An electron in an electron microscope with initial velocity `v_(0)hati` enters a region of a stray transverse electric field` E_(0)hatj` . The time taken for the change in its de-Broglie wavelength from the initial value of `lambda` to `lambda//3` is proportional to

A

`E_(0)`

B

`(1)/(E_(0))`

C

`(1)/(sqrt(E_(0)))`

D

`sqrt(E_(0))`

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The correct Answer is:
B
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