Phase difference for constructive interference is Α. φ= 2ηπ B. 6 = (2n + 1)r C. φ= ηπ D. ¢ = (n + 1)T
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- Solve only number 16An interference filter has a dielectric layer (refractive index 1.34) with a thickness of 0.805 μm. If the determination is to be based on the first-order interference, calculate the wavelength (nm) can be transmitted?A spherical source of light with a diameter Deource = 3.55 cm radiates light equally in all directions, with power P = 4.10 W. (a) Find the light intensity (in kW/m2) at the surface of the light source. |kW/m² (b) Find the light intensity (in mW/m2) r = 7.10 m away from the center of the light source. mW/m2 (c) At this 7.10 m distance, a lens is set up with its axis pointing toward the light source. The lens has a circular face with a diameter of Dlens = 16.0 cm and has a focal length of f = 34.0 cm. Find the diameter (in cm) of the light source's image. cm (d) Find the light intensity (in W/m2) at the image. |W/m2
- Two identical sources A and B emit in-phase plane radio waves with frequency 7.84E4 Hz and intensity 1.78E2 W/m2. A detector placed at location P closer to source B than source A detects a destructive interference. What is the intensity of the wave detected by the detector (in W/m2)?OTS tutorial (a) Explain the origin of the transverse phase condition that results in the equation for a slab waveguide given below (b) (c) (d) (1) 2nd√/n²-n² 20 = mл+Sp Explain what happens if this condition is not satisfied? Ignoring the G-H shift term, rearrange this equation for n For a waveguide at a wavelength of 1.55um, a core index of 3.5 and a thickness of 2um, work out the effective indices for m= 1, 2, 3 and 4 What happens to the modal index as the m number increases? Why? Explain why the mode effective index for the m-1 is not 3.5