A rectangular waveguide with a horizontal length a = 2 cm and a vertical length b = 1.5 cm is filled with a material with a relative dielectric value of 4. What would be the cutoff frequency for the dominant mode? 3.75 GHz 4 GHz 5 GHz 6.56 GHz

With the graph, and knowing wave length is 532 nm 2 sources seperated by 8 um, where are first order J maximum and the FWHM? I'm trying to learn how to find first order maximum and FWHM. intensity 10 0.8 0.6 0.4 0.2 0.0 0 1 2 3 distance (cm) 4 5

Wave propogatiaon

2. A He-Ne laser (543 nm) illuminates a lens with f=6 cm and diameter d=2.66 cm. Calculate and plot the MTF of the lens assuming this is a perfect diffraction limited system. Plot this from 0 frequency to just past the cutoff frequency. Calculate the cutoff frequency as part of this.