Diffraction Grating Experiment Quiz

1. What are the Laser light characteristics ?

2. What is population Inversion?

3. What is Interference?

4. Does diffracted Waves can interfere?

5. What is diffraction grating?

6. What is spontaneous and stimulated emission process?

7. What is the condition for constructive interference?

8. What is grating Element?

9. Why do you use n lembda= d sin theta formula? What is the origin to derive this formula for this experiment?

10. What is the standard value of Red Color wavelength in He-Ne gas LASER?

11. What is full form of the LASER?

12. Step to calculate the percentage error:

1. Determine the difference between the observed value and the standard value
2. divided by the standard value
3. now multiply by the 100 to change in percentage
4. use label of % in result.

13. How to find the grating element of a given diffraction grating having 1500 Lines Per Inch (LPI)?