The maximum velocity of an electron emitted by light of wavelength \lambda incident on the surface of a metal of work function \ϕ is __________ [ℏ = Planck's constant, m = mass of electron and c = speed of light].

Correct Answer is : √2(ℏc−λϕ)mλ

\sqrt{\frac{2(ℏc+\lambda\ϕ)}{m\lambda}}

\sqrt{\frac{2(ℏc-\lambda\ϕ)}{m\lambda}}

AP EAMCET Engineering 21 Sep 2020 Shift 2 Paper

Section: Physics

Question : 103 of 160

Marks: +1, -0

The maximum velocity of an electron emitted by light of wavelength λ incident on the surface of a metal of work function ϕ is __________ [ℏ = Planck's constant, m = mass of electron and c = speed of light].

√
2(ℏc+λϕ)
mλ
2(ℏc−λϕ)
m
√
2(ℏc−λϕ)
mλ
2(ℏλ−ϕ)
m

Validate

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