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With a diffraction grating that has 3800 slits/cm, a monochromatic light source produces 2nd order bright...

With a diffraction grating that has 3800 slits/cm, a monochromatic light source produces 2nd order bright fringe at an angle of 22

(a) What is the wavelength of the source? Express this in meters and nm.

(b) Draw a diagram indicating the 1st and 2nd order bright fringes. Indicate all the parameters.

(c) If the screen is 0.3-m away, how far (in cm) is 2nd order bright fringe from the center?

please explain

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