Monday, January 13, 2014

quiz practice

1.  Make sure you finish the diffraction (informal) lab for wavelength of laser light.  There will be a related question on the quiz.

2.  Speaking of which..... A 400 nm laser hits a diffraction grating (750 slits/mm).  The wall/screen is 2-m away from the grating.  Find:

a.  diffraction angle for a first order image
b.  distance between the central/primary (n = 0) image and the first order image
c.  how many images are produced

3.  Consider a 40-cm focal length mirror.  An object (5 cm in height) is 100 cm in front of it.  Find:

a.  image location
b.  magnification of image
c.  image characteristics
d.  Give the do(s) that would yield only virtual images.
e.  Give the do(s) that would yield NO images.

During the quiz day, I'll also ask you to write a short self-reflection/"what I've found interesting" paragraph.  This will be included in your semester grade report.  Feel free to start writing this now.  It needs to be emailed to me before the end of the week.  Thanks!


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