Stokes Line and Anti-Stokes Line Definitions

A Stoke line is radiation of line spectra in fluorescence or Raman scattering with longer wavelength than the exciting radiation.

An anti-Stokes line is radiation of line spectra in fluorescence or Raman scattering with shorter wavelength than the exciting radiation.

OPTICS AND SPECTROSCOPY III INTERNAL TEST

OPTICS AND SPECTROSCOPY - 4BPH4C1

III INTERNAL TEST

PART –A  5 x 2 =10 MARKS

1.GIVE THREE METHODS OF MINIMIZING SPHERICAL ABERRATION.
2. STATE STOKES LAW
3. WHAT IS A SELECTION RULE?
4. GIVE AN APPLICATION OF VIBRATIONAL RAMAN SPECTRA.
5. WHAT ARE STOKES AND ANTI STOKES LINES?

PART – B 4 x 5 = 20 MARKS

6. GIVE THE THEORY OF HALF WAVE PLATE.

7. DISCUSS THE QUANTUM THEORY OF RAMAN EFFECT.

PART – C 2 x 10 = 20 MARKS

8. DISCUSS CLASSICAL THEORY OF RAMAN EFFECT
9. DISCUSS ROTATIONAL SPECTRA OF RIGID DIATOMIC MOLECULES.

Unit V - Spectroscopy Notes - Part I

Click HERE to download Spectroscopy(Unit V) notes Part I as PDF

OPTICS AND SPECTROSCOPY - II INTERNAL TEST

Optics and Spectroscopy - 7BPH3C1

 II Internal Test

Time : 2.5 Hrs                                                                                                                         Marks: 40

                                                                        PART - A                                                        5 x 2 = 10

1. List the uses of air wedge.

2. State Rayleigh Criterion for resolution.

3. Define resolving power of a prism. 

4. State any two differences between Fresnel and Fraunhofer diffraction.

5. Define specific rotatory power.

                                                                       PART - B                                                      2 x 5 = 10

1.Derive an expression for resolving power of grating.
2. Explain Fresnel diffraction at a circular aperture.

                                                                         PART - C                                                     2 x 10 = 20

1. Describe Fraunhofer diffraction at a double slit.
2. Give the theory of plane transmission grating. Describe an experiment to determine the wavelength of sodium lines.

ANALOG ELECTRONICS - II INTERNAL TEST

Analog Electronics - 4BPH5C1

 II Internal Test

Time : 2.5 Hrs                                                                                                                         Marks: 40

                                                                        PART - A                                                        5 x 2 = 10

1.Draw the symbol of a PNP and NPN transistor.

2.Define current gain in CE mode.

3.What is stability factor? Give its importance.

4.What are h parameters?

5.Give the difference between voltage and power amplifier.

                                                                       PART - B                                                      2 x 5 = 10

1.Describe voltage divider bias.
2.Describe AC and DC equivalent circuits of CE transistor amplifier.

                                                                         PART - C                                                     2 x 10 = 20

1.Describe in detail load line analysis of a CE amplifier. Also derive expressions for voltage gain and input impedance.  
2. Explain the working of an RC coupled CE amplifier. List out its merits and drawbacks.