Chemistry, asked by varshithagutti, 6 months ago

calculate the kinetic energy of an electron by an atom by 400nm light when it's threshold wave length is600nm

Answers

Answered by shivamsharma215

Explanation:

Here, λ=600nm,λ

′

=400nm,K

max

′

=2K

max

According to Einstein photoelectric equation

max

−ϕ

and 2K

max

′

−ϕ

Dividing by we get

−ϕ

′

−ϕ

2hc

−2ϕ

′

−ϕ

2hc

−2ϕ

′

−ϕ

Or hc(

−

′

)=ϕ

∴ϕ

=1240eVnm(

600nm

−

400nm

)=1.03eV

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calculate the kinetic energy of an electron by an atom by 400nm light when it's threshold wave length is600nm​

Answers

calculate the kinetic energy of an electron by an atom by 400nm light when it's threshold wave length is600nm