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PHYS 221 Recitation

PHYS 221 Recitation. Kevin Ralphs Week 11. Quiz Question. A slit of width 130 μ m passes a plane wave of infrared radiation of wavelength 1020 nm to a screen which is 3.14 m away. What is the full with of the forward “bright” central maximum intensity stripe on the screen? 1.64 cm 3.28 cm

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PHYS 221 Recitation

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  1. PHYS 221 Recitation Kevin Ralphs Week 11

  2. Quiz Question A slit of width 130 μm passes a plane wave of infrared radiation of wavelength 1020 nm to a screen which is 3.14 m away. What is the full with of the forward “bright” central maximum intensity stripe on the screen? • 1.64 cm • 3.28 cm • 4.93 cm • 6.88 cm • 17.5 cm

  3. Practice Problem

  4. Quiz Question Monochromatic light is normally incident on a grating that is 1 cm wide and has 10,000 slits. The first order line is deviated at a 30° angle. What is the wavelength of the incident light? • 300 nm • 400 nm • 500 nm • 600 nm • 1000 nm

  5. Quiz Question A scope with a diameter of 2.0 cm is attached to a rifle and used for target practice with targets that are 300 m away. What is the smallest feature on the target that can be resolved with this telescope? Assume λ = 400 nm. Ignore the effect of the Earth’s atmosphere on the resolution. • 15 mm • 12 mm • 6.0 mm • 7.3 mm • 9.2 mm

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