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Light with a Frequency Of 8.70×1014 Hz8.70 \times 1014 \mathrm {~Hz} Is Incident on a Metal That Has a Work Function

Question 64

Multiple Choice

Light with a frequency of 8.70×1014 Hz8.70 \times 1014 \mathrm {~Hz} is incident on a metal that has a work function of 2.80eV2.80 \mathrm { eV } . What is the maximum kinetic energy that a photoelectron ejected in this process can have? (1eV=( 1 \mathrm { eV } = 1.60×1019 J,h=6.626×1034 Js) \left. 1.60 \times 10 ^ { - 19 } \mathrm {~J} , h = 6.626 \times 10 ^ { - 34 } \mathrm {~J} \cdot \mathrm { s } \right)


A) 1.3×1019 J1.3 \times 10 ^ { - 19 } \mathrm {~J}
B) 4.5×1019 J4.5 \times 10 ^ { - 19 } \mathrm {~J}
C) 8.7×1019 J8.7 \times 10 ^ { - 19 } \mathrm {~J}
D) 2.4×1019 J2.4 \times 10 ^ { - 19 } \mathrm {~J}
E) 3.1×1019 J3.1 \times 10 ^ { - 19 } \mathrm {~J}

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