Interference and Diffraction
Practice Test
1.
In a double slit experiment with slits 1.0×10
-5
m apart, light casts the first bright band 3.0×10
-2
m from the center of a screen 0.65 m away. What is the wavelength of this light?
a.
460 nm
b.
390 nm
c.
430 nm
d.
510 nm
Hint
2.
Why did Young place a single slit between the light source and the double slit?
a.
Light needs to escape the system.
b.
A single source of light is needed.
c.
to make the light waves coherent
d.
to filter out other colors of light
Hint
3.
Reflection and transmission gratings produce __________ interference patterns that are analyzed in ___________.
a.
similar; the same manner
b.
opposite; different manners
c.
opposite; the same manner
d.
identical; different manners
Hint
4.
According to the Rayleigh criterion, two stars can be resolved if the__________.
a.
central bright bands overlap
b.
central bright band falls on the dark band of the second star
c.
dark bands overlap precisely
d.
dark band of the first star covers the dark band of the second one
Hint
