What is the energy of one photon of frequency 1.0 × 10¹⁵ Hz (h = 6.63 × 10⁻³⁴ J s)?
Correct answer D. 6.63 × 10⁻¹⁹ J
Explanation
From Planck's equation, E = hν = 6.63 × 10⁻³⁴ J s × 1.0 × 10¹⁵ s⁻¹ = 6.63 × 10⁻¹⁹ J.
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