Question: 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
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 ym, where ym= mÆ(λ/α). Draw a line from the center of the lens-2 to a point a height ymabove the central axis; it makes an angle θ with that axis, where θ ym/s.
Fig. 9.14
L1 L2 Discharge lamp Lens 1 Lens 2 Filter Aperture screen Viewing screen
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