Physics > 2008 > 45

JAMB UTME

If electrons are accelerated from rest through a potential difference of 10kV,
what is the wavelength of the associated electron?
[m = 9.1 x 10-31kg, e = 1.6 x 10-19C, h = 6.6 x 10-34Js]

A.
1.22 x 10-11m
B.
3.87 x 10-10m
C.
2.27 x 1011m
D.
2.27 x 1014m

Answer: A

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