AP EAMCET202422 May 2024Evening ShiftPhysicsElectrostaticsActual
The magnitude of an electric field which can just suspend a deuteron of mass 3.2 10⁻²⁷ ~kg freely in air is
Options
- A19.6 10⁻⁸ NC ⁻¹
- B196 NC ⁻¹
- C1.96 10⁻¹⁰ NC ⁻¹
- D0.196 NC ⁻¹
Correct answer
A. 19.6 10⁻⁸ NC ⁻¹
Step-by-step solution
m =3.2 10⁻²⁷ ~kg , q = e =1.6 10⁻¹⁹ C At equilibrium, m g=qE E = mg q = 3.2 10⁻²⁷ 9.8 1.6 10⁻¹⁹ =19.6 10⁻⁸ NC ⁻¹