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Electrostatics question

2019 · 8 Apr · Shift 2 · Q65
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Electrostatics question

2019 · 8 Apr · Shift 2 · Q65

JEE MainPhysicsElectrostaticsMCQ+4 / −1
A positive point charge is released from rest at a distance r0 from a positive line charge with uniform density. The speed (v) of the point charge, as a function of instantaneous distance r from line charge, is proportional to :- JEE Main 2019 (Online) 8th April Evening Slot Physics - Electrostatics Question 192 English
  1. A
    v∝(rr0)v \propto \left( {{r \over {{r_0}}}} \right)v∝(r0​r​)
  2. B
    v∝ln⁡(rr0)v \propto \ln \left( {{r \over {{r_0}}}} \right)v∝ln(r0​r​)
  3. C
    v∝e+r/r0v \propto {e^{ + r/{r_0}}}v∝e+r/r0​
  4. D
    v∝ln⁡(rr0)v \propto \sqrt {\ln \left( {{r \over {{r_0}}}} \right)}v∝ln(r0​r​)​
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