An electron accelerated through 100 V has kinetic energy (in eV) equal…

Question

An electron accelerated through 100 V has kinetic energy (in eV) equal to

Accepted Answer

C. {'text': '100 eV', 'label': 'C'}

1. 1 eV is defined as the energy gained by an electron across 1 V of potential difference.
2. Across V volts, an electron gains eV = e × V joules of kinetic energy.
3. Expressed in eV, this is simply V eV.
4. So through 100 V, the electron gains 100 eV of kinetic energy.
_Source: NCERT Class 12 Physics, Ch 11 "Dual Nature of Radiation and Matter", §11.2_

Answer

{'text': '1 eV', 'label': 'A'}

Answer

{'text': '10 eV', 'label': 'B'}

Answer

{'text': '1000 eV', 'label': 'D'}