A Fraunhofer diffraction pattern is created by monochromatic light shining through which of the following?
a. single slit
b. double slit
c. triple slit
d. more than 3 slits
a
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If you jump straight up while inside a fast-moving train that gains speed, you land
A) slightly ahead of your original position. B) at your original position. C) slightly behind your original position.
The focal length of the lens of a simple film camera is 40.0 mm. By what amount should the distance between the lens and the film be increased or decreased to change the focus from a person
who is 25 m from the lens to one who is 4.0 m from the lens? A) 0.2 mm B) 0.3 mm C) 0.4 mm D) 0.5 mm E) 0.7 mm
The index of refraction of transparent materials is
a. equal to 1. b. greater than 1. c. less than 1. d. any of these.
A compound formed from atoms from the far left and the far right of the periodic table is probably a(n) ______________ compound
Fill in the blank(s) with correct word