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Electrostatics question

2021 · 24 Feb · Shift 2 · Q54
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  5. /2021 · 24 Feb · Shift 2 · Q54

Electrostatics question

2021 · 24 Feb · Shift 2 · Q54

JEE MainPhysicsElectrostaticsMCQ+4 / −1
Two electrons each are fixed at a distance '2d'. A third charge proton placed at the midpoint is displaced slightly by a distance x (x << d) perpendicular to the line joining the two fixed charges. Proton will execute simple harmonic motion having angular frequency : (m = mass of charged particle)
  1. A
    (2q2πε0md3)12{\left( {{{2{q^2}} \over {\pi {\varepsilon _0}m{d^3}}}} \right)^{{1 \over 2}}}(πε0​md32q2​)21​
  2. B
    (q22πε0md3)12{\left( {{{{q^2}} \over {2\pi {\varepsilon _0}m{d^3}}}} \right)^{{1 \over 2}}}(2πε0​md3q2​)21​
  3. C
    (2πε0md3q2)12{\left( {{{2\pi {\varepsilon _0}m{d^3}} \over {{q^2}}}} \right)^{{1 \over 2}}}(q22πε0​md3​)21​
  4. D
    (πε0md32q2)12{\left( {{{\pi {\varepsilon _0}m{d^3}} \over {2{q^2}}}} \right)^{{1 \over 2}}}(2q2πε0​md3​)21​
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