Why Are Fringes Not Observed If the Angle of the Wedge

question 94

Multiple Choice

Why are fringes not observed if the angle of the wedge of air in the diagram is too large?

• A) For a large angle, the small-angle approximation (sin \(\theta\) \(\approx\) \(\theta\)) is not valid.
• B) the light passing through the wedge of air loses its coherence
• C) the fringes overlap
• D) the fringes are too close together to be seen individually
• E) None of these is correct.

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Definitions:

State Governments

The governing authorities of the 50 states within the United States, each with its own constitution and powers separate from the federal government.

National Government

Refers to the political authority that governs an entire nation, encompassing all three branches (executive, legislative, and judicial) and responsible for national policy, lawmaking, and administration.

Ultimate Authority

The highest level of power or the most authoritative figure or institution in a specific context or system.

Dual Federalism

A political arrangement in which state and national governments are seen as distinct entities providing separate spheres of governance, with little overlap.