General Science • PhysicsMedium
Which of the following particles is classified as a gauge boson responsible for mediating the electromagnetic force?
A. Electron
B. Photon✓ Correct Answer
C. Neutron
D. Proton
💡 Solution & Explanation
The photon is a massless gauge boson that acts as the exchange particle or mediator for the electromagnetic force as described by quantum electrodynamics. Unlike electrons and protons which are matter fermions with half-integer spin, the photon possesses a spin of one. Photons travel at the speed of light in a vacuum and carry electromagnetic energy across various wavelengths of the spectrum. The study of these exchange particles forms the foundational framework of modern particle physics and gauge theories.
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