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Science Bowl Question

📅 NSB 2011🎓 MS🔄 Round 11#️⃣ Question 24❓ TOSS-UP📝 Multiple Choice

Which of the following BEST describes a cathode ray?

W) A device that emits light through a process of optical amplification based on the stimulated emission of photons
X) An electrode through which electric current flows out of a polarized electrical device
Y) A stream of electrons observed in vacuum tubes
Z) An electrode through which electric current flows into a polarized electrical device
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