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Physics · Practice
Photons, Atoms & Nuclei
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Question 1 of 12
Easy
0:00 / 1:20
The wavelength of a beam of light is 495 nm. The energy of one photon of this light is ( )
(Take h = 6.6 × 10⁻³⁴ J·s, c = 3.0 × 10⁸ m/s, 1 eV = 1.6 × 10⁻¹⁹ J)
A
4.0 eV
B
0.25 eV
C
2.5 eV
D
6.4 eV
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