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Electrostatics question

2017 · Shift 2 · Q37
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Electrostatics question

2017 · Shift 2 · Q37

JEE AdvancedPhysicsElectrostaticsMultiple correct+4 / −1
A point charge +Q+Q+Q is placed just outside an imaginary hemispherical surface of radius RRR as shown in the figure. Which of the following statements is/are correct? JEE Advanced 2017 Paper 2 Offline Physics - Electrostatics Question 45 English
  1. A
    The electric flux passing through the curved surface of the hemisphere is −Q2ε0- {Q \over {2{\varepsilon _0}}}−2ε0​Q​ (1−12)\left( {1 - {1 \over {\sqrt 2 }}} \right)(1−2​1​)
  2. B
    Total flux through the curved and the flat surfaces is Qε0{Q \over {{\varepsilon _0}}}ε0​Q​
  3. C
    The component of the electric field normal to the flat surface is constant over the surface
  4. D
    The circumference of the flat surface is an equipotential
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