If ϕ is the work function of photosensitive material in eV and light of wavelength of numerical value λ = e h c metre, is incident on it with energy above its threshold value at an instant then the

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If ϕ is the work function of photosensitive material in eV and light of wavelength of numerical value λ = e h c ​ metre, is incident on it with energy above its threshold value at an instant then the maximum kinetic energy of the photo-electron ejected by it at that instant (Take h -Plank's constant, c -velocity of light in free space) is (in SI units):NEET 2024 (Re-NEET)

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( K . E ) m a x ​ = λ h c ​ − ϕ 0 ​ and λ = e h c ​ ⇒ ( K . E ) m a x ​ = e h c ​ h c ​ − ϕ 0 ​ ⇒ ( K . E ) m a x ​ = e − ϕ 0 ​ ⇒ ( K . E . ) m a x ​ = e ⊣ ϕ

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