HW for Weds/Thurs

Create a study sheet for the test. Things you believe will be important to know for the test. Test days are:

Friday - C block
Monday - E block

Some questions to try:

1. A 10-cm focal length lens is used in an experiment. An object is placed 30-cm away from it. Find the following:

a. location of image
b. type (R/V) of image
c. magnification of image
d. up or down?
e. What type of lens is this?
f. How would this problem be different if the focal length of the lens were -10 cm?

2. (Review on Snell's Law)

A light (wavelength of 700 nm; 700 x 10^-9 m) hits a rectangular piece of plastic, striking it an angle of 40 degrees (with respect to a normal line). The angle of refraction inside is 17 degrees. Find the following:

a. index of refraction of this plastic
b. speed of light OUTSIDE block
c. frequency of light OUTSIDE BLOCK
d. speed of light OUTSIDE BLOCK
e. speed of light INSIDE BLOCK
f. frequency and wavelength INSIDE BLOCK
g. critical angle of this plastic
h. picture to represent this problem

3. Consider the recent lab. You have a diffraction grating, 500 slits/mm. A 650-nm laser is directed at it. Find the following:

a. d (in m), knowing that the grating has 500 slits/mm
b. angle of diffraction for n=1
c. How many images could be seen? (This is a tricky one.)

Thanks!