As we know, for photoelectric emission, hν>ϕ.
Now,
hν=λhc=3501240eV=3.54eV
Therefore, only metal B will emit photoelectrons.
JEE Main 2023 — Physics Modern Physics
If the two metals A and B are exposed to radiation of wavelength 350nm. The work functions of metals A and B are 4.8eVand2.2eV. Then choose the correct option
Held on 31 Jan 2023 · Verified 6 Jul 2026.
Metal B will not emit photo-electrons
Both metals A and B will emit photo-electrons
Both metals A and B will not emit photoelectrons
Metal A will not emit photo-electrons
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