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An electron of work function 1.4 eV is e...

An electron of work function 1.4 eV is emitted with a velocity `5 xx 10^6 m/s`.The wavelength of the incident radiation is

A

`0.017 Aoverset (@)`

B

`1.7 Aoverset(@)`

C

`17 Aoverset(@)`

D

`170 Aoverset(@)`

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