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When violet light of wavelength 415 nm falls on a single slit, it creates a central diffraction peak that is 8.80 cm wide on a screen that is 2.75 m away. How wide is the slit?

  • Physics -

    sinT= lambda/a

    a= lambda/sinT

    Isn't TanT=.0044/2.75 ? Since this is a very small angle, sinT appx= tanT

    calculate slit width a.

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