PHYSICS NOTES ON ELEMENTARY PARTICLES
CLASS 11 AND 12
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Elementary Particles : The term elementary particles signify the particles of structureless and those can not be constructed from other particles. Present model of the constituents of matter is that they consist of fundamental point like, on a scale of 10-17 m, spin ½ fermions- the quarks with fractional electric charge and the leptons carrying zero or integral electric charge. Hence there are two types of fundamental fermions, called quarks and leptons, which are structuresless and point like. One of the important modern ideas of forces is that forces between particles arise from the exchange of particles.
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Physics