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RJ-195
B.Sc.-B.Ed. (Secondary) Examination, 2024
(Second Semester)
PHYSICS-DC-IV
Electromagnetic Theory
Time : 3 Hours]
[Maximum Marks : 60
Note : All questions are compulsory and carries equal marks.
2.
Derive Clausius Mossotti equation and give its interpretation.
12
Or
Derive boundary conditions to be satisfied by $\vec{E}$ and $\vec{D}$ at the interface between two homogeneous dielectrics.
Derive boundary conditions to be satisfied by $\vec{E}$ and $\vec{D}$ at the interface between two homogeneous dielectrics.
3.
State Ampere's law. Find the intensity of magnetic field inside a solenoid.
12
Or
A charge 'Q' enters a uniform magnetic field $\vec{B}i$ with velocity $\vec{V}=V_0(\hat{i}+\hat{j})$. Calculate the force and trajectory of the charge particle.
A charge 'Q' enters a uniform magnetic field $\vec{B}i$ with velocity $\vec{V}=V_0(\hat{i}+\hat{j})$. Calculate the force and trajectory of the charge particle.
1.
State Gauss Theorem and on the basis of it find intensity of Electric field due to a uniformly charged infinite straight wire at a distance $r$ from it.
12
Or
In an uniformly electric field, a dipole is slightly displaced from its equilibrium position. Prove that, oscillation is SHM and find its time period of oscillation.
In an uniformly electric field, a dipole is slightly displaced from its equilibrium position. Prove that, oscillation is SHM and find its time period of oscillation.
4.
(a) Write all 4 Maxwell's equations in vaccume and in non-vaccume medium. Express the equations in integral form as well.
(b) Given $\vec{H}=H_0\exp(\omega t+\beta z)\hat{j}$ in free space. find $\vec{E}$.
12
Or
Prove non existence of magnetic monopole.
Prove non existence of magnetic monopole.
5.
Define equation of Electro-magnetic Waves as the basis of Maxwell's equations. Write a expression from $\vec{E}$ and $\vec{B}$ field associated with EM wave.
12
Or
Prove that EM waves are transverse in nature.
Prove that EM waves are transverse in nature.