Suppose two glass plates are two microscope slides, at one endthey are in contact, at the other they are separated by a piece ofpaper.

QUESTION: Show how you can measure the thickness of the object (usemeasurements of the interference pattern) .

How do you I go about this one please, with steps?

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A single beam of coherent light (Î» = 633Â·10-9 m) is incident ontwo glass slides (with a refractive index of 1.50), which aretouching at one end and are separated by a d = 0.0213-mm thicksheet of paper on the other end, as shown in the figure. Beam 1reflects off the bottom surface of the top slide, and Beam 2reflects off the top surface of the bottom slide. Assume that allthe beams are perfectly vertical and that they are perpendicular toboth slides, i.e., the slides are nearly parallel (the angle isexaggerated in the figure); the beams are shown at angles in thefigure so that they are easier to identify. Beams 1 and 2 recombineat the location of the eye in the figure. The slides are L = 8.09cm long and D = 1.19 mm thick.

a) At what position does the first bright minimum appear? Answer isnot 1.2*10^-3 m

b) How many full bright bands are observed? Answer is not 32.

Beyond that, I need some help.

Answer is not 1.2*10^-3 m

b) How many full bright bands are observed?

Answer is not 32.

Beyond that, I need some help.

A single beam of coherent light (Î» = 633Â·10^-9 m) isincident on two glass slides (with a refractive index of 1.50),which are touching at one end and are separated by a d =0.0247-mm thick sheet of paper on the other end, as shown in thefigure. Beam 1 reflects off the bottom surface of the top slide,and Beam 2 reflects off the top surface of the bottom slide. Assumethat all the beams are perfectly vertical and that they areperpendicular to both slides, i.e., the slides are nearly parallel(the angle is exaggerated in the figure); the beams are shown atangles in the figure so that they are easier to identify. Beams 1and 2 recombine at the location of the eye in the figure. Theslides are L = 8.31 cm long and D = 1.05 mmthick.

a) At what position does the first bright fringe appear?

b) How many full bright bands are observed?

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