CAPE Physics Unit 2 · 2007 (Specimen) · Paper 1 · Question Q33
Photoelectrons are emitted from the surface of zinc metal when light of intensity, I, and wavelength, \lambda, is incident on it. What is the effect on the work function of the zinc metal if the intensity is doubled and the wavelength is reduced to \frac{1}{4} of its previous value? The work function is
- (A)doubled
- (B)halved
- (C)quartered
- (D)unchanged
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