\( \begin{array}{lrrcrr}\text { If photons of } & \text { frequency are } & v & \text { aretals ... VIDEO
\( \begin{array}{lrrcrr}\text { If photons of } & \text { frequency are } & v & \text { aretals } \\ \text { incident on the surfaces of } & \text { metals }\end{array} \)https://bit.ly/YTAI_PWAP https://www.pw.live
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