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3 years ago

7

The work function of titanium metal is 6.93 × 10⁻¹⁹ J. Calculate the kinetic energy of the ejected electrons if light of frequen

cy 1.216 × 10¹⁵ s⁻¹ is used to irradiate the metal.

1 answer:

vladimir2022 [97]3 years ago

6 0

Answer:

6.81*10^-20 J

Explanation:

The energy from the light does two things: it removes the electrons from the surface of the metal and the rest is taken up as kinetic energy by the electrons.

K.E = hf - work function $K.E. = 6.26*10^{-34} *1.216*10^{15} - 6.93*10^{-19} = 6.81*10^{-20} J$

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