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Answer to Question #48972 in Optics for abdul

Question #48972
A laser whose wavelength is λa = 4.7 × 10-7 m shines through a diffraction grating. The light hits a screen L
= 3 m away and fourth order maximum is detected 0.52 m on either side of the central maximum.
(a) What is the separation between the slits?
(b) What is the path difference from the diffraction grating to the fourth maximum, measured in meters?
(a) A new laser whose wavelength is λb = 6.3 × 10-7 m shines through the slits and both its fourth
maximums are labeled. What is the distance from the fourth order maximum using λa and the closest
fourth maximum using λb?
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