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1. Two narrow slits 50 μm apart are illuminated with light of wavelength 510 nm ....

1. Two narrow slits 50 μm apart are illuminated with light of wavelength 510 nm . What is the angle of the m=2 bright fringe in radians? What is the angle of the m=2 bright fringe in degrees?

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Answer #1

By using Young's double slit formula,

sin theta =m*lambda/d

           = 2*510e-9/50e-6

          = 0.0204

theta = arcsin(0.0204)

         = 0.0204 rad   Answer

        = 1.169   degree   Answer

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