What is the name of the large machine at CERN that collides particles in an underground ring about 27 kilometres long?
Answer and explanation
Correct answer: B. The Large Hadron Collider
- Step 1: The ring lies under the border of Switzerland and France. Step 2. The machine is the Large Hadron Collider. Answer: the LHC. Why not the others: the Large Electron-Positron Collider was its predecessor in the same tunnel, the Super Proton Synchrotron is an injector and the Relativistic Heavy Ion Collider is in the United States.
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