The work function of a substance is 4.0 eV. The longest wavelength of light that can cause

Question 1

The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photo-electron emission from this substance is approximately

(a) 540 nm

(b) 400 nm

(c) 310 nm

(d) 220 nm

Question 2

Correct Option (c) 310 nm

Explanation:

The work function of a substance is 4.0 eV. The longest wavelength of light that can cause

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The work function of a substance is 4.0 eV. The longest wavelength of light that can cause

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