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Find the kinetic energy of emitted elect...

Find the kinetic energy of emitted electron, if in a photoelectric effect energy of incident Photon is 4 eV and work function is 2.4 eV.

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To find the kinetic energy of the emitted electron in the photoelectric effect, we can use the following formula: \[ K.E. = E_{photon} - \phi \] Where: - \( K.E. \) is the kinetic energy of the emitted electron, - \( E_{photon} \) is the energy of the incident photon, - \( \phi \) is the work function of the material. ### Step-by-step Solution: 1. **Identify the energy of the incident photon**: Given that the energy of the incident photon \( E_{photon} = 4 \, eV \). 2. **Identify the work function**: Given that the work function \( \phi = 2.4 \, eV \). 3. **Substitute the values into the kinetic energy formula**: \[ K.E. = E_{photon} - \phi \] \[ K.E. = 4 \, eV - 2.4 \, eV \] 4. **Perform the subtraction**: \[ K.E. = 1.6 \, eV \] 5. **Conclusion**: The kinetic energy of the emitted electron is \( 1.6 \, eV \).
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