11. Dual nature of radiation and matter — Physics STD 12 Science — Question
CBSE BoardEnglish MediumSTD 12 SciencePhysics11. Dual nature of radiation and matter1 Mark
MCQ
Thermions are
A
protons
B
photons
✓
electrons
D
positrons
✓
Answer
Correct option: C.
electrons
c An electrically charged particle or ion that is emitted by a heated conducting material. The electrons emitted from the cathodes of electron tubes (such as cathode ray tubes) are known as thermions.
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