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If the threshold wavelength for a certain metal is 2000 Å , then the work-function of the metal is (a) 6.21 (b) 6.2eV (c) 6.2MeV (d) 6.2keV



If the threshold wavelength for a certain metal is 2000 Å, then the work-function of the metal is


        (a)    6.21


        (b)    6.2eV       


(c)    6.2MeV


(d)    6.2keV


Grade:upto college level

1 Answers

Hrishant Goswami
343 Points
7 years ago

(b)

Threshold wavelength (l) = 2000 Å = 2000 × 10-10 m.

Work function

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