Question

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Answer 1

Answer:

d) 2.08 × $10^{-19}$ J

Explanation:

Total energy = Work function + kinetic energy

convert 3.7 eV into J by multiplying it with 1.6 × $10^{-19}$, same for 5eV.

here 3,7 eV is work function and 5eV is total energy.

put them in the equation and solve for K.E.

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