A Wedge-Shaped Film of Air Is Formed by Placing Two

question 153

Multiple Choice

A wedge-shaped film of air is formed by placing two flat glass plates with one end touching each other and the other end spaced by a gold leaf. The wedge is then illuminated using a monochromatic light of wavelength 590 nm from above and the complete fringe pattern is shown. The thickness of the gold leaf is approximately

• A) 7.1 µm.
• B) 7.4 µm.
• C) 6.5 µm.
• D) 6.8 µm.
• E) 7.8 µm.

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Definitions:

Cost-Benefit Analysis

A systematic approach to estimate the strengths and weaknesses of alternatives, assessing the value of costs and benefits to support decision-making.

Paired-Choice Majority Votes

A voting method in which voters choose between pairs of candidates or options, with the majority preference deciding the outcome.

Paradox of Voting

The situation where individual rationality does not lead to collective rationality, suggesting that the cost of voting outweighs the apparent benefits.

Median-Voter Model

A theoretical model suggesting that the outcome of majority rule voting systems will reflect the preferences of the median voter.