Wavelength and Double Slit Diffraction

Experiment No 2 (Part 2)

Single and Double Slit Diffraction

Name: Prachi Chaudhary

Enrollment number: Btech 2nd year #33

Date: 27th Aug 2012

Observations

Wavelength of He-Ne laser is λ = 632.8 nm.

Part I: Single Slit Diffraction

Distance between single slit and detector is D = .739 m ( 73.9 cm ).

|S.No. |Position of detector (cm) |Detector’s reading |
|1. |0.021 |0.006 |
|2. |0.169 |0.016 |
|3. |0.28 |0.025 |
|4. |0.651 |0.034 |
|5. |0.726 |0.042 |
|6. |0.733 |0.052 |
|7. |0.765 |0.078 |
|8. |0.786 |0.092 |
|9. |0.815 |0.175 |
|10. |0.862 |0.183 |
|11. |1.116