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The photoelectric threshold wavelength o...

The photoelectric threshold wavelength of a metal is 300 nm. The maximum kinetic energy of electrons ejected from the metal surface by ultraviolet light of wavelength 250 nm is nearly `(given h = 4.14*10^-15 eV s and c= 3*10^8 ms^-1)`

A

0.828 eV

B

4.14 eV

C

4.968 eV

D

1.288 eV

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