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JEE Main20253 Apr 2025Morning ShiftPhysicsDual Nature of MatterActual

The work function of a metal is 3 eV. The color of the visible light that is required to cause emission of photoelectrons is

Options

  1. AGreen
  2. BBlue
  3. CRed
  4. DYellow

Correct answer

B. Blue

Step-by-step solution

aligned & ( KE )_ = hc - & hc [ for emission ] & hc 1242 3 ~nm aligned So blue light option (B)

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