A surface has a work function 1.70 eV and has light of wavelength 400 nm shone on it. What is the maximum speed of the photoelectrons emitted?

A)

1.0 × 106 m/s
B)

1.3 × 106 m/s
C)

7.0 × 105 m/s
D)

7.7 × 105 m/s
E)

3.5 × 106 m/s


C

Physics & Space Science

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