1 electron-volt (eV) equals

Question

Accepted Answer

D. {'text': '1.602 × 10⁻¹⁹ J', 'label': 'D'}

1. 1 eV is defined as the energy gained by an electron across 1 volt of potential difference.
2. Numerically, 1 eV = e × 1 V = 1.602 × 10⁻¹⁹ J.
3. eV is a convenient energy scale for atomic and nuclear physics.
4. 9.11 × 10⁻³¹ kg is the electron mass; 6.63 × 10⁻³⁴ J·s is Planck constant.
_Source: NCERT Class 12 Physics, Ch 11 "Dual Nature of Radiation and Matter", §11.2_

Answer

{'text': '1.602 × 10⁻⁶ J', 'label': 'A'}

Answer

{'text': '9.11 × 10⁻³¹ J', 'label': 'B'}

Answer

{'text': '6.63 × 10⁻³⁴ J', 'label': 'C'}