IGNOU MPH 13 SOLVED ASSIGNMENT

Ques 1.

Differentiate between isotropic and anisotropic media for electromagnetic wave propagation. Give one example of each.

Ques 2.

 Derive the wave equation for the electric field  in anisotropic non-conducting medium starting from Maxwell's equations.

Ques 3.

What is Jones vector? Determine the Jones matrix for a linear polariser which makes an angle of  with the x-axis. 

Ques 4.

 Using the scalar theory of diffraction, obtain the expression for Fresnel diffraction integral.

Ques 5.

 On the basis of Fresnel diffraction integral, discuss the conditions which differentiate between Fresnel and Fraunhofer diffraction.

Ques 6.

List the components of a laser and discuss each of them briefly.

Ques 7.

A mercury vapour lamp emits light of mean wavelength  with a spectral spread . Calculate

Ques 8.

the coherence length,

Ques 9.

the spectral line width in Hertz, and

Ques 10.

the coherence time of the emitted radiation.

Ques 11.

the coherence time of the emitted radiation.
Take the speed of light, . 

Ques 12.

 Derive the expressions for TE and TM mode fields in an optical waveguide, relating electric and magnetic field components. 

Ques 13.

What factors determine the number of modes propagating in an optical fiber?

Ques 14.

 A step-index optical fiber has core refractive index 1.50, cladding refractive index 1.45, and core diameter . The wavelength of light propagating in the fiber is . Calculate the V-number and comment if it supports single-mode or multimode propagation. 

Ques 15.

Differentiate between isotropic and anisotropic media for electromagnetic wave propagation. Give one example of each.

Ques 16.

 Derive the wave equation for the electric field  in anisotropic non-conducting medium starting from Maxwell's equations.

Ques 17.

What is Jones vector? Determine the Jones matrix for a linear polariser which makes an angle of  with the x-axis. 

Ques 18.

 Using the scalar theory of diffraction, obtain the expression for Fresnel diffraction integral.

Ques 19.

 On the basis of Fresnel diffraction integral, discuss the conditions which differentiate between Fresnel and Fraunhofer diffraction.

Ques 20.

List the components of a laser and discuss each of them briefly.

Ques 21.

A mercury vapour lamp emits light of mean wavelength  with a spectral spread . Calculate

Ques 22.

the coherence length,

Ques 23.

the spectral line width in Hertz, and

Ques 24.

the coherence time of the emitted radiation.

Ques 25.

the coherence time of the emitted radiation.
Take the speed of light, . 

Ques 26.

 Derive the expressions for TE and TM mode fields in an optical waveguide, relating electric and magnetic field components. 

Ques 27.

What factors determine the number of modes propagating in an optical fiber?

Ques 28.

 A step-index optical fiber has core refractive index 1.50, cladding refractive index 1.45, and core diameter . The wavelength of light propagating in the fiber is . Calculate the V-number and comment if it supports single-mode or multimode propagation. 

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