Which of the following metals will release electrons with the highest kinetic energy, and what is their energy value?

Lithium, 0.45 eV
Tungsten, 1.75 eV
Lithium, 2.30 eV
Tungsten, 2.75 eV

Correct answer: Lithium, 2.30 eV

Solution

In the photoelectric effect, the question asks for the maximum kinetic energy of emitted electrons. Among the given options, 2.30 eV is the highest value, and it is associated with lithium. Therefore, that option is correct.

Related JEE Advanced Physics questions

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