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What is a photon?
what is a photon?
-a wavelength of energy having amplitude and frequency
-a mixture of different elements in a metal
-a packet of light energy emitted from a light source
-a magnet used to deflect electrons away from traveling in a straight path

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macklaia62
The photon is a type of elementary particle. It is the quantum of the electromagnetic field including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless,[a] so they always move at the speed of light in vacuum so the answer is A a photon is a wave length

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