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The photoelectric work function for a metal surface is 4.125 eV. The cut off wavelength for this surface is

        (a)    4125 Å

        (b)    3000 Å

        (c)    6000 Å

        (d)    2062.5 Å

Simran Bhatia , 11 Years ago
Grade 11
anser 1 Answers
Amit Saxena

Last Activity: 11 Years ago

(b)

Let l0 be cut off wavelength

work function. =  = 4.125 × 1.6 × 10-19

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