MasteringPhysics: Ch 35 HW-Google C Secure https//session.masteringphysics.com/m

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MasteringPhysics: Ch 35 HW-Google C Secure https//session.masteringphysics.com/myct temView?assignmentProblemID.83208741 Ch 35 HW Problem 3565 · previous 15 of1 Problem 35.65 Part A The wings of a certain beetle have a series of parallel lines across them. When normally incident 440 -nm light is reflected from the wing, the wing appears bright when viewed at an angle of 60 How far apart are the lines? Assume that the first diffractive order is observed Express your answer using two significant figures. 0 da 51 Submit My. Answers Give Up Incorrect; Try Again; 27 attempts remaining

Explanation / Answer

Given,

Angle, = 60°

Wavelength, = 440 nm

For maximum interference,

Sin = 1 x /d

Distance, d = 1 x /Sin = (1 x 440 x 10-9) / Sin60° = 5.08 x 10-7 m = 508 nm

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