MCQMediumJEE Main 2026 · 21 January, Shift 1Photoelectric Effect

Physics Question from JEE Main 2026 · 21 January, Shift 1

A light wave described by E=60[sin(3×1015t)+sin(12×1015t)]E = 60[\sin(3 \times 10^{15}t) + \sin(12 \times 10^{15}t)] (in SI units) falls on a metal surface of work function 2.8eV2.8 \, \text{eV}. The maximum kinetic energy of ejected photoelectron is (approximately) _____ eV\text{eV}. (h=6.6×1034J.sh = 6.6 \times 10^{-34} \, \text{J.s} and e=1.6×1019Ce = 1.6 \times 10^{-19} \, \text{C})

  • A

    3.83.8

  • B

    5.15.1

  • C

    6.06.0

  • D

    7.87.8

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