UV light of 4.13 eV is incident on a photosensitive metal surface having work function 3.13 eV. The maximum kinetic energy of ejected photoelectrons will be: (a) 4.13 eV (b) 1 eV (c) 7.26 eV (d) 3.13 eV

Answer: (b). Kmax = E - φ Kmax = 4.13 - 3.13 = 1 eV So the answer is (b) 1 eV.

UV light of 4.13 eV is incident on a photosensitive metal surface… | JEE Main 2024 (9 Apr, Shift 2)

Q53JEE Main 2024 · 9 APR · SHIFT 2Easy

Photoelectric Effect: Einstein's Equation

UV light of $4.13\text{ eV}$ is incident on a photosensitive metal surface having work function $3.13\text{ eV}$ . The maximum kinetic energy of ejected photoelectrons will be:

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Answer: (b)

$K_{max} = E - \phi$
$K_{max} = 4.13 - 3.13 = 1\text{ eV}$
So the answer is (b) 1 eV.

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