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Blue light has more energy.

Using the formula:
photon energy (E) = Planck constant (h) * frequency (ƒ) Blue has a higher frequency than red. Since h is constant, E increases as ƒ increases.


Using the formula:
photon energy (E) = Planck constant (h) * speed of light (c) / wavelength (λ)
Blue has a shorter wavelength than red. Since h and care considered constant, E increases as λ decreases.

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