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Light of wavelength 675 nm passesthrough a double slit, and makes itsfirst minimum (m = 1) at an angle of0.111 deg. What is the separation ofthe slits, d, in MILLIMETERS?(Remember, milli means 10-3.)(Unit
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Light of wavelength 675 nm passesthrough a double slit, and makes itsfirst minimum (m = 1) at an angle of0.111 deg. What is the separation ofthe slits, d, in MILLIMETERS?(Remember, milli means 10-3.)(Unit = mm)

User Paramjit
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wavelength = 675 nanometer


\begin{gathered} \wedge=675nm \\ \text{Convert to mm} \\ \wedge=0.000675\operatorname{mm} \end{gathered}

Therefore,


\begin{gathered} d\sin 0.111=m\wedge \\ d=(m\wedge)/(\sin0.111) \\ d=(1*0.000675)/(0.00193731425*2) \\ d=(0.000675)/(0.00193731425*2) \\ d=0.17421063226\operatorname{mm} \\ d=0.174\operatorname{mm} \end{gathered}

User Ryane
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