Diffraction Grating Quiz
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A short quiz on the key concepts in the Diffraction Gratings Unit. Just type in your name and start the quiz. Answers to all the questions will be presented at the end of the quiz.
- 1.Why are diffraction gratings used instead of single slit or double slits to measure the wavelength of light?
- A.
Gratings provide a much wider diffraction maxima.
- B.
Gratings provide equal spacing between the maxima and minima.
- C.
Gratings provide very narrow diffraction maxima which can be accurately measured.
- D.
Both A and B
- E.
None of the Above
- 2.Which of the following is true for antinodes (maxima) in Diffraction Gratings??
- A.
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- B.
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- C.
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- D.
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- E.
None of the Above
- 3.
- A.
2000 lines per cm
- B.
800 lines per cm
- C.
8580 lines per cm
- D.
1635 lines per cm
- E.
None of the Above
- 4.
- A.
Spaces between antinodes in a diffraction pattern
- B.
Width of each one of the slits in the grating.
- C.
The distance between the grating and the screen.
- D.
Distance between each one of the slits in the grating
- E.
Both A and B
- 5.When white light passes through a diffraction grating, there are places where some of the colours in the diffracted light overlap.
- A.
True
- B.
False
- 6.
- A.
12.2 degrees
- B.
4.4 degrees
- C.
32.4 degrees
- D.
14.8 degrees
- E.
None of the Above
- 7.For diffraction gratings, 'd' is calculated by dividing the number of slits by the length of the grating (in meters)
- A.
True
- B.
False
- 8.A full spectral order refers to an order in which all the colours/wavelengths of light are visible.
- A.
True
- B.
False
- 9.Diffraction Gratings follow the same mathematical model as Single Slit Diffraction
- A.
True
- B.
False
- 10.The farther apart the slits in a grating, the wider the diffraction pattern.
- A.
True
- B.
False
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