In a photoelectric effect experiment irradiation of a metal with light of frequency `5.2 xx 10^(14) s^(-1)` yields electrons with maximum kinetic energy `1.3 xx 10^(-19) J`. Calculate the threshold frequency `(v_(0))` for the metal.

Explanation

To calculate the threshold frequency \( v_0 \) for the metal in a photoelectric effect experiment, we can use the formula derived from Einstein's photoelectric equation:

\[ E = h v = h v_0 + KE \]

Where:
- \( E \) is the energy of the incoming photons,
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