λhc−ϕ=e.Vs⇒3001240eV−2.13eV=eVs⇒4.13eV−2.13eV=eVs.⇒ So, Vs=2volt
When UV light of wavelength 300 nm is incident on the metal surface having work function 2.13eV, electron emission takes place. The stopping potential is: (Given hc =1240eVnm )
Held on 6 Apr 2024 · Verified 6 Jul 2026.
1.5 V
4.1 V
2 V
4 V
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