Problem 4 A laser with wavelength 656 nm is incident on a diffraction grating with 1600 lines/mm. (a) (15 points) Find t

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Problem 4 A Laser With Wavelength 656 Nm Is Incident On A Diffraction Grating With 1600 Lines Mm A 15 Points Find T 1 (25.11 KiB) Viewed 72 times

Problem 4 A laser with wavelength 656 nm is incident on a diffraction grating with 1600 lines/mm. (a) (15 points) Find the smallest distance from the grating that a converging lens with focal length of 20 cm be placed so that the diffracted laser light converges to a point 1.0 meter from the grating. (b) (15 points) If a screen is placed at the location from part (a), how far apart will the two first order beams appear on the screen? (if you did not solve part (a), use a distance of 0.5 m).