Two Very Flat Glass Plates, 16 Cm Long, Are in Contact

question 61

Multiple Choice

Two very flat glass plates, 16 cm long, are in contact at one end and separated by 0.020 mm at the other end. The space between the plates is occupied by oil with index of refraction 1.45. The
Refractive index of the glass plates is 1.55. The plates are illuminated at normal incidence with
Monochromatic light, and fringes are observed. When the monochromatic light has a wavelength
Of 580 nm, how many bright fringes are visible in the pattern?

• A) 60
• B) 90
• C) 80
• D) 100
• E) 70

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Definitions:

1816

The year known for the "Year Without a Summer" due to significant global temperature anomalies that led to major food shortages in the Northern Hemisphere.

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Individuals from countries in Europe who move to another country, often in search of better living conditions, opportunities, or to escape conflict.

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The act of making a choice or decision in an election or other formal decision-making process, typically through casting a ballot.

Suffrage

The right to vote in political elections.