Bright and Dark Fringes Are Seen on a Screen When

question 29

Multiple Choice

Bright and dark fringes are seen on a screen when light from a single source reaches two narrow slits a short distance apart. The number of fringes per unit length on the screen can be doubled

• A)if the distance between the slits is doubled.
• B)if the wavelength is changed to .
• C)if the distance between the slits is quadruple the original distance and the wavelength is changed to .
• D)if any of the above occurs.
• E)only if the width of the slits is changed to .

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Definitions:

Civil Rights Initiatives

Programs, policies, or legislative actions aimed at ensuring and improving legal rights and social quality for all, particularly for marginalized groups.

American Sentiment

Refers to the collective attitudes, feelings, or opinions of the American people, often in the context of patriotism or national issues.

Truman Administration

The period of U.S. presidency under Harry S. Truman, from 1945 to 1953, notable for its implementation of the Marshall Plan, the establishment of NATO, and the beginning of the Cold War.

Berlin Airlift

A military operation in 1948-1949 where Western allies supplied West Berlin by air during the Soviet blockade.