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Grade upto college level Modern Physics

When photons of energy hv fall on an aluminium plate (of work function E₀), photoelectrons of maximum kinetic energy K are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photoelectrons will be

(a) 2K

(b) K

(c) K + hv

(d) K + E₀

Amit Saxena

12 Years agoGrade upto college level

1 Answer

Simran Bhatia

12 Years ago

(c)

Applying Einstein''s formula for photoelectricity

If we use 2v frequency then let the kinetic energy becomes K''

So,

h. 2v = f + K''

2hv = hv – K + K''

K''= hv + K

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