Diffraction Grating - Light Experiment Quiz

When white light passes through a diffraction grating, there are places where some of the colours in the diffracted light overlap.

• True

• False

For diffraction gratings, 'd' is calculated by dividing the number of slits by the length of the grating (in meters)

• True

• False

What is the formula for diffraction grating?

• D = \frac {1} { N }

• D = \frac {1/N }

• D = {2} { N }\frac

Diffraction Gratings follow the same mathematical model as Single Slit Diffraction

• True

• False

The zero-order maximum in the case when light is incidence on a diffraction grating, will be _____

At what angle will 560-nm light produce a second-order maximum when falling on a grating whose slits are 1.45 X 10^-3 cm apart?

• 12.2 degrees

• 4.4 degrees

• 32.4 degrees

• 14.8 degrees

• None of the Above

Why are diffraction gratings used instead of single slit or double slits to measure the wavelength of light?

• Gratings provide a much wider diffraction maxima.

• Gratings provide equal spacing between the maxima and minima.

• Gratings provide very narrow diffraction maxima which can be accurately measured.

• Both A and B

• None of the Above

The farther apart the slits in a grating, the wider the diffraction pattern.

• True

• False

For diffraction gratings, 'd' represents

• Spaces between antinodes in a diffraction pattern

• Width of each one of the slits in the grating.

• The distance between the grating and the screen.

• Distance between each one of the slits in the grating

• Both A and B