When you shine a laser with unknown wavelength through a diffraction grating with 1000 slits/mm, you...

When you shine a laser with unknown wavelength through a diffraction grating with 1000 slits/mm, you observe the m = 1 bright fringe on the screen with an angle of 26 degrees away from the center of the grating.

What is the wavelength of your laser?

Plug in the relevant numbers to solve for your laser pointer photon wavelength in nanometers.

If the new diffraction bright fringe is at a LARGER angle than the diffraction bright fringe from the first grating, is the new diffraction spacing larger or smaller than the old diffraction line spacing?

Similarly, what if the new diffraction bright fringe is at a SMALLER angle?

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Expert Solution

genius_generous answered 1 month ago

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