
Understanding Diffraction and Diffraction Gratings

Interactive Video
•
Physics
•
10th - 12th Grade
•
Hard
Nancy Jackson
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is diffraction?
The spreading of a wave when it passes through a gap or around an obstacle
The absorption of light by a material
The reflection of light off a surface
The bending of light when it hits a mirror
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a diffraction grating consist of?
A solid piece of glass
A reflective surface
Multiple different slits or openings
A single large opening
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many lines per millimeter does the example diffraction grating have?
400 lines per millimeter
200 lines per millimeter
100 lines per millimeter
300 lines per millimeter
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the line separation 'd' in a diffraction grating?
The wavelength of the light
One over the number of lines per meter
The distance between two slits
The distance between two light sources
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the diffraction equation d sin(θ) = nλ, what does 'n' represent?
The intensity of light
The angle of incidence
The order of diffraction
The speed of light
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the central maximum in diffraction?
The point where light is reflected
The point directly opposite the light source
The point where light is refracted
The point where light is absorbed
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the wavelength used in the example problem?
700 nanometers
600 nanometers
500 nanometers
800 nanometers
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