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In: Physics

When red light (λr = 715 nm) illuminates a diffraction grating, a second order maximum is...

When red light (λr = 715 nm) illuminates a diffraction grating, a second order maximum is seen at a vertical location y = 12.5 cm on a screen L = 45.0 cm away from the grating.
(a) At what angle does the second order maximum occur?
(b) What is the distance, d, between the slits?
(c) If the grating is 2.50 cm wide, how many slits make up the grating?
(d) Where on the screen would the second order maximum occur for an orange light λo = 615 nm?

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