A Convex Spherical Surface with Radius R Separates a Medium

question 36

Multiple Choice

A convex spherical surface with radius r separates a medium with index of refraction 2 from air.As an object in air is moved toward the surface from far away along the central axis, its image:

• A)changes from virtual to real when it is a distance r/2 from the surface
• B)changes from virtual to real when it is a distance r from the surface
• C)changes from real to virtual when it is a distance r/2 from the surface
• D)changes from real to virtual when it is a distance r from the surface
• E)remains real

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Definitions:

Manpower

The total number of workers available to perform a job or a task.

Slaves to Enlist

Refers to the historical practice of allowing enslaved individuals to join military forces, often in exchange for promises of freedom or rewards, seen in various conflicts including the American Civil War.

Paper Money

Currency in the form of banknotes issued by a government or central bank, representing a legal tender for transactions.

Post-War Inflation

The economic scenario characterized by rising prices following the end of a major conflict, often due to increased demand and supply chain disruptions.