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One electron volt is the energy gained by an electron accelerated through:
A9 volts
B1 volt
C2 volts
D5 volts
Answer & Solution
Correct answer: B. 1 volt
1. The unit is defined by an accelerating potential.
2. One electron volt is the energy gained by an electron accelerated through a potential difference of 1 volt.
3. So the correct answer is 1 volt.
_Source: NCERT Class 12 Physics Part II, Ch 11 'Dual Nature of Radiation and Matter'_
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