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प्रश्न
The emission of electron is possible
विकल्प
Photo electric effect
Thermionic emission
Both photo electric effect and thermionic emission
None
MCQ
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उत्तर
Both photo electric effect and thermionic emission
Explanation:
Both the photoelectric effect and the thermionic emission are correct answers. The process by which an electron escapes from a mental surface is known as electron emission. Every atom has a positively charged nuclear core surrounded by negatively charged electrons.
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