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If the kinetic energy of an electron of ...

If the kinetic energy of an electron of mass `9.0xx10^(-31)` kg is `8xx10^(-25)J`,t he wavelength of this electro in nm is:

A

1104.1

B

276.2

C

552.2

D

828.2

Text Solution

Verified by Experts

The correct Answer is:
C
`lamda=(h)/(sqrt(2Em))=(6.626xx10^(-34))/(sqrt(2xx9.0xx10^(-31)xx8xx10^(-25)))`
`=552.2xx10^(-9)m=552.2nm`
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