Consider the physical setup shown in Fig. 9.14. If the focal length of the second lens is Æ’, prove that maxima are located at y_m, where y_m= mÆ’(λ/α). Draw a line from the center of the lens-2 to a point a height y_mabove the central axis; it makes an angle θ with that axis, where θ ‰ˆ y_m/s.

Fig. 9.14

Transcribed Image Text:

L1 L2 Discharge lamp Lens 1 Lens 2 Filter Aperture screen Viewing screen