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Electrostatics question

2009 · Shift 1 · Q46
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Electrostatics question

2009 · Shift 1 · Q46

JEE AdvancedPhysicsElectrostaticsMCQ+3 / −1
Three concentric metallic spherical shells of radii R,2R,3RR,2R,3RR,2R,3R are given charges Q1,Q2,Q3Q_1,Q_2,Q_3Q1​,Q2​,Q3​, respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. Then, the ratio of the charges given to the shells, Q1:Q2:Q3Q_1:Q_2:Q_3Q1​:Q2​:Q3​, is
  1. A
    1 : 2 : 3
  2. B
    1 : 3 : 5
  3. C
    1 : 4 : 9
  4. D
    1 : 8 : 18
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