M.Sc. Forensic Science FSMS SI-2: INSTRUMENTAL TECHNIQUES Question Bank

 NATIONAL FORENSIC SCIENCES UNIVERSITY

NFSA, Pune

M.Sc. Forensic Science

FSMS SI-2: INSTRUMENTAL TECHNIQUES

Question Bank

UNIT-I: Basics of Instrumentation:

ANSWER THE FOLLOWING QUESTIONS- 02 Marks

1. What is electromagnetic radiation?

2. What is an electromagnetic spectrum?

3. Give five examples of electromagnetic radiations.

4. Select two different types of electromagnetic radiation and compare them. Include a 

comparison of their wavelength, frequency, and energy.

5. List the three types of electromagnetic spectrum a source of light can produce.

6. Define electromagnetic spectrum.

7. Define electromagnetic radiation

8. What are the various types of electromagnetic radiations?

9. Which type of electromagnetic wave has the longest wavelength?

10. Which type of electromagnetic wave has the shortest wavelength?

11. What is the use of radio waves?

12. Write a short note on Refraction of Radiation

13. What is the use of microwaves?

14. Write a short note on Scattering of Radiation

15. What is the use of infrared rays?

16. What are the different colours of visible light?

17. What is the use of ultraviolet light?

18. What is the wavelength range of ultraviolet light?

19. What is the use of X-rays?

20. Write a short note on Transmission of Radiation

21. What is the use of gamma rays?

22. What are electromagnetic waves?

23. What is the significance of frequency in electromagnetic waves?

24. Write the following radiations in a descending order of frequencies: UV light, X-rays, 

microwaves, radio waves?

25. Write the application of Infra-red radiations?

26. What do you understand by the term electromagnetic waves?

27. Describe the following key points?

i. Wavelength

ii. Wavenumber

28. Give a brief introduction about the infrared waves?

29. Write a short note on Diffraction of Radiation

30. Give two uses of 1) IR radiation 2) Microwaves 3) UV radiation 

31. Write a short note on Reflection of Radiation

32. Write short notes on 1) Microwave 2) X-ray 3) Radio waves

33. Why are infrared radiations also referred as heat waves? Write the name of radiations 

which lie next to infrared radiations in the electromagnetic spectrum.

34. Write a short note on Coherent Radiation

35. Define the following terms?

i. Crest

ii. Trough

36. Describe the following terms?

i. Frequency

ii. Amplitude

37. Arrange the following electromagnetic waves in the descending order of their 

wavelengths

i. Microwaves

ii. Infrared rays

iii. Ultraviolet radiation

iv. Gamma-rays

38. Identify the given wave



39. Write a short note on Polarization of Radiation

40. Explain the Quantum mechanical properties of Radiation

41. Explain the meaning of the term photoelectric emission?

42. Explain dual nature of light?

43. Identify the given wave:



44. Define the term work function.

45. What is Planck’s constant?

46. What is Planck’s constant in simple terms?

47. What is Planck’s number?

48. What is the formula associated with Planck's Quantum Theory?

49. What is the significance of Planck's law in understanding black body and 

electromagnetic radiation?

50. Define Emission Spectroscopy.

51. Define Chemiluminescence Spectroscopy.

52. Define Photoluminescence Spectroscopy.

53. Define Fluorescence Spectroscopy.

54. Define Phosphorescence Spectroscopy.

55. Define Absorption Spectroscopy.

56. Define electronic spectra.

57. What is a molecular structure?

58. Explain linear configuration with one suitable example.

59. Explain trigonal configuration with one suitable example.

60. Explain tetrahedral configuration with one suitable example.

ANSWER THE FOLLOWING QUESTIONS- 04 Marks

1. Write a brief note about the daily life applications of electromagnetic waves.

2. What is the difference between infrared and ultraviolet rays?

3. Write down the varying properties of the electromagnetic waves.

4. Write down the general properties of electromagnetic waves.

5. Write any four characteristics of electromagnetic waves. Give two uses of (i) radio 

waves (ii) Microwaves.

6. State the characteristics of electromagnetic waves.

7. Explain the transverse nature of electromagnetic waves.

8. What is electromagnetic spectrum? Explain different parts of the electromagnetic 

spectrum.

9. State any four properties of (i) Gamma rays (ii) X-rays

10. State uses of (i) X-rays (ii) Ultraviolet rays (iii) Infrared rays

11. Define Electromagnetic waves.

12. State various units of electromagnetic waves.

13. Draw neat labelled diagram of Electromagnetic spectrum.

14. State why long exposure to X-rays is harmful.

15. Write short note on Visible light.

16. What are microwaves? Explain its properties and uses.

17. What are radio waves? State properties and uses of radio waves.

18. Explain the role of radio waves in the propagation of electromagnetic waves through 

communication system.

19. Draw a neat and well labelled diagram of three main modes of electromagnetic waves.

20. Sketch a schematic diagram depicting oscillating electric and magnetic fields of 

Electromagnetic wave

21. Draw a sketch of a plane electromagnetic wave propagation along the Z-direction. 

Depict clearly the direction of electric and magnetic fields varying sinusoidally with Z.

22. How are X-rays Produced? Write their two important uses.

23. How are infrared rays produced? Write their two important uses.

24. How are microwaves produced? Write their two important uses.

25. Which segment of electromagnetic waves has highest frequency? How are these waves 

produced? Give one use of these waves.

26. Which Electromagnetic waves lays near the high frequency end of visible part of 

Electromagnetic spectrum? Give its uses. In what way, its component of light has 

harmful effects on humans?

27. Differentiate between Transmission of Radiation and Scattering of Radiation?

28. Differentiate between Diffraction of Radiation and Coherence of Radiation?

29. Differentiate between Reflection of Radiation and Refraction of Radiation?

30. What are the two important postulates of Planck's quantum theory?

31. Write four properties of Cathode rays?

32. Explain the observation of Photoelectric effect?

33. Explain in detail Emission Spectroscopy. Depict it with an energy level diagram.

34. Explain in detail Fluorescence Spectroscopy. Depict it with an energy level diagram

35. Explain in detail Phosphorescence Spectroscopy. Depict it with an energy level diagram

36. Explain in detail Absorption Spectroscopy. Depict it with an energy level diagram

ANSWER THE FOLLOWING QUESTIONS IN DETAIL- 09 Marks

1. Define Electromagnetic wave. Write the general properties of Electromagnetic 

Radiation?

2. What happens when the wave hits a surface?

3. How does electromagnetic wave differ?

4. Write about Quantum or particle model?

5. Write in detail about the wave properties of Electromagnetic Radiation.

6. Depict the below given terms in the form of a diagram:

i. Diffraction of Radiation

ii. Coherent Radiation

iii. Transmission of Radiation

iv. Refraction of Radiation

v. Reflection of Radiation

vi. Scattering of Radiation

vii. Polarization of Radiation

7. Explain the below given terms:

i. Diffraction of Radiation

ii. Coherent Radiation

iii. Transmission of Radiation

iv. Refraction of Radiation

v. Reflection of Radiation

vi. Scattering of Radiation

vii. Polarization of Radiation

8. Write in detail the interaction of Electromagnetic Radiation with matter?

9. Differentiate between Emission and Absorption Spectroscopy. Draw a neat labelled 

energy level diagram.

10. Differentiate between Fluorescence and Phosphorescence Spectroscopy. Draw a neat 

labelled energy level diagram depicting Fluorescence and Phosphorescence 

phenomenon.

11. Explain the photoelectric effect. Explain it with a help of a diagram

12. Explain the photoelectric effect and its applications

13. Write about De-Broglie theory. Explain in detail the de-Broglie equation.

14. Write the application of De-Broglie theory?

15. What is Heisenberg’s Uncertainty Principle?

16. State the importance of Heisenberg’s uncertainty principle.

17. Explain in detail the concept of Davisson and German Experiment.

18. Explain Davisson and Germer experiment with diagram.

19. Explain in detail the electronic transitions with suitable example.

20. Explain in detail the molecular structure with suitable examples for each configuration.

******

Dr. G. Swetha

Assistant Professor

(Forensic Chemistry)

NFSU, Pune

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