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Sodium and copper have work function 2.3 eV and 4.5 eV respectively

Sodium and copper have work function 2.3 eV and 4.5 eV respectively. The ratio of their threshold wavelengths is nearest to

Options

(a) 1 : 2
(b) 4 : 1
(c) 2 : 1
(d) 1 : 4

Correct Answer:

2 : 1

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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