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JEE Advanced 2012Paper 1
Exam
JEE Advanced
Year
2012
Paper
Paper 1
Subject
Physics
Chapter
Electrostatics

JEE Advanced 2012 · Paper 1 · Physics · Electrostatics

Consider a thin spherical shell of radius R with centre at the...

Consider a thin spherical shell of radius RR with centre at the origin, carrying uniform positive surface charge density. The variation of the magnitude of the electric field ∣E⃗(r)∣|\vec{E}(r)| and the electric potential V(r)V(r) with the distance rr from the centre, is best represented by which graph?Consider a thin spherical shell of radius R with centre at the origin, carrying uniform positive surface chargeConsider a thin spherical shell of radius R with centre at the origin, carrying uniform positive surface chargeConsider a thin spherical shell of radius R with centre at the origin, carrying uniform positive surface chargeConsider a thin spherical shell of radius R with centre at the origin, carrying uniform positive surface charge

Options

  1. AAssertion : Hydrogen nuclei combines to form helium nuclei then energy is released. Reason : Binding energy/nucleon of
  2. BAssertion : Hydrogen nuclei combines to form helium nuclei then energy is released. Reason : Binding energy/nucleon of
  3. CAssertion : Hydrogen nuclei combines to form helium nuclei then energy is released. Reason : Binding energy/nucleon of
  4. DAssertion : Hydrogen nuclei combines to form helium nuclei then energy is released. Reason : Binding energy/nucleon of

Correct answer

D. Assertion : Hydrogen nuclei combines to form helium nuclei then energy is released. Reason : Binding energy/nucleon of

Step-by-step solution

For a thin uniformly positive charged spherical shell (i) Inside the shell at any point E=OE=O and V=14π∈0qR=V=\frac{1}{4 \pi \in_{0}} \quad \frac{q}{R}= constt. where q=q= charge on sphere R=R= Radius of sphere (ii) Outside the shell at any point at any distance rr from the centre E∝1r2E \propto \frac{1}{r^{2}} and V∝1rV \propto \frac{1}{r}
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