A photon has a wavelength of 500nm what is the energy associated

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01-01-2018
Physics

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A photon has a wavelength of 500nm what is the energy associated

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samuraijack samuraijack · Answer 1 · 2018-01-01T07:04:19+01:00

Given: Plank's constant h = 6.626 x 10⁻³⁴ J.s

Speed of light c = 2.998 x 10⁸ m/s

Wavelength λ = 500 nm convert to meter = 5 x 10⁻⁷ m

Required: Energy E =?

Formula: E = hc/λ

E = (6.626 X 10⁻³⁴ J.s)(2.998 X 10⁸ m/s)/5 x 10⁻⁷ m

E = 3.97 X 10⁻¹⁹ J or in termS of electron volt

E = 2.48 eV