Correct Answer - Option 1 : joule (J)
The correct answer is option 1) i.e. joule (J)
CONCEPT:
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Work function: It is the minimum amount of energy required to cause photo-emission of electrons from a metal surface when light is incident on it.
The energy of a photon is given by the equation:
\(E =hν\)
Where ν is the frequency of incident light and h is the Planck's constant.
EXPLANATION:
- The work function is a measure of energy. All forms of energy have the same SI unit i.e. joule (J).