[tex]\tt{\huge{\blue{Explanation:}}}[/tex]
The energy of a photon is given by
[tex]\boxed{E = hf}[/tex]
where:
E = energy
h = Planck's constant = [tex]6.63 \times 10^{-34}[/tex] J • s
f = frequency
[tex]\tt{\huge{\red{Solution:}}}[/tex]
E = hf
[tex]E = (6.63 \times 10^{-34} \: \text{J} \cdot \text{s})(2 \times 10^{19} \: \text{Hz})[/tex]
[tex]\boxed{E = 1.33 \times 10^{-14} \: \text{J}}[/tex]
Therefore, the energy of the photon is 1.33 × 10⁻¹⁴ J.
[tex]\\[/tex]
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