1.

A photon has an energy of 4.00 x 10-19 J. Find the frequency.

Answer»

Given \(E = 4 \times 10^{-19} J\)

Frequency \(V =\, ?\)

\(E = hV\)

\(V = \frac Eh\)

\(V = \frac{4\times 10^{-19}}{6.64 \times 10^{-34}}\)

\(V = 0.602 \times 10^{15}\)

\(V = 6.02 \times 10^{14} Hz\)



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