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If threshold wevelength for sodium is 6800 Å, the work function will be

If threshold wevelength for sodium is 6800 Å, the work function will be

Options

(a) 1.8 eV
(b) 2.5 eV
(c) 0.14 eV
(d) 1.4 eV

Correct Answer:

1.8 eV

Explanation:

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