You want to photograph a circular diffraction pattern whose
You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.27 cm. You have a heliumneon laser (wavelength=684 nm) and a 0.11-mm-diameter pinhole. How far behind the pinhole should you place the viewing screen?
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You want to photograph a circular diffraction pattern whose central maximum has a diameter of 1.27 cm. How far behind the pinhole should you place the viewing screen
Light from a helium-neon laser (wavelength=649 nm) passes through a circular aperture and is observed on a screen 2.36 m behind the aperture
A 1.09-cm-diameter microscope objective has a focal length of 2.4 mm. It is used in visible light with a wavelength of 516 nm. What is the objective's resolving power if used in air
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A telephoto lens with focal length of 123 mm has f-numbers ranging from f/2.8 to f/22. What is the diameter of the lens aperture at the second f-number
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