Diffraction - Single Slit, Double Slit, & Diffraction Gratings - exam practice
Diffraction - Single Slit, Double Slit, & Diffraction Gratings
Question 1 of 11
1 of 11
In a diffraction-grating experiment the maxima are produced on a screen.
What causes the separation of the maxima of the diffraction pattern to decrease?
Question 2 of 11
2 of 11
White light passes through a single narrow slit and illuminates a screen.
What is observed on the screen?
Question 3 of 11
3 of 11
When a monochromatic light source is incident on two slits of the same width an interference pattern is produced.
One slit is then covered with opaque black paper.
What is the effect of covering one slit on the resulting interference pattern?
Question 4 of 11
4 of 11
When light of wavelength 5.0 × 10−7 m is incident normally on a diffraction grating the fourth-order maximum is observed at an angle of 30°.
What is the number of lines per mm on the diffraction grating?
Question 5 of 11
5 of 11
Monochromatic light of wavelength 490 nm falls normally on a diffraction grating that has 6 x 105 lines per metre. Which one of the following is correct?
Question 6 of 11
6 of 11
In a Young’s double-slit experiment, monochromatic light is incident on two narrow slits and the resulting interference pattern is observed on a screen.
Which change decreases the fringe separation?
Question 7 of 11
7 of 11
A diffraction grating is illuminated normally.
The second-order maximum for light of wavelength 650 nm occurs at the same angle as the third-order maximum for light of wavelength λ.
What is λ?
Question 8 of 11
8 of 11
A narrow beam of monochromatic light is incident normally to a diffraction grating.
The first-order diffracted beam makes an angle of 20° with the normal to the grating.
What is the highest order visible with this grating at this wavelength?
Question 9 of 11
9 of 11
Monochromatic light is incident normally on a diffraction grating that has 4.50 × 105 lines m−1.
The angle between the second-order diffraction maxima is 44°.
What is the wavelength of the light?
Question 10 of 11
10 of 11
Monochromatic electromagnetic radiation of wavelength 5.8 × 10–7 m is incident normally on a diffraction grating with 3.0 × 105 lines per metre.
What is the highest order maximum produced?
Question 11 of 11
11 of 11
A diffraction grating has 500 lines per mm. When monochromatic light is incident normally on the grating the third-order spectral line is formed at an angle of 60° from the normal to the grating.
What is the wavelength of the monochromatic light?