Photoelectric Effect & Silver: Can 449nm Light Eject Electrons?

[crosbykins]

Homework Statement

Would 449-nm blue light eject electrons from silver metal with a work function of 4.74 eV?

Homework Equations

E = hc/lamba

The Attempt at a Solution

E = [(6.63*10^-34 J*s)(3.00*10^8 m/s)]/(4.49*10^-7 m)
= 4.42*10^-19 J

4.42J/1.60*10^-19 J/eV
= 2.77 eV

Since 2.77 eV is less than the work function the blue light would not eject electrons from the silver metal.

***is this correct?? thanks for the help in advance! :)

 

[rock.freak667]

Yes that is correct.