A 35-Cm-Long Microscope Glass Slide Has One Edge in Contact with with a Flat

question 84

Multiple Choice

A 3.5-cm-long microscope glass slide has one edge in contact with a flat plane of glass,while the other edge is slightly raised due to the insertion of a thin piece of paper.Sodium light of wavelength 589 nm is normally incident on the glass from above and interference fringes are observed by reflection with a regular spacing of 0.22 mm.Calculate the thickness of the piece of paper.

• A)9.4 \(\times\) 10^-5 m
• B)5.5 \(\times\) 10^-5 m
• C)2.4 \(\times\) 10^-5 m
• D)4.7 \(\times\) 10^-5 m
• E)None of these is correct.

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