Question:medium

If the work function of a metal is 6.875 eV, its threshold wavelength will be (Take \(c = 3 \times 10^8\) m/s)

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Useful constant: \(hc = 1240\) eV·nm = 12400 eV·Å.

Updated On: Apr 23, 2026

3600 Å
2400 Å
1800 Å
1200 Å

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The Correct Option is C

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