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Which of the following is not a graphic aid?

AEpidiascope

BChart

CMap

DGraph

Answer:

A. Epidiascope

Read Explanation:

  • An epidiascope is an optical device used in the late 19th and early 20th centuries, primarily for projecting images, such as photographs or drawings, onto a screen.

  • It could project both opaque materials (like photographs or documents) and transparent materials (like slides).

  • It was an important predecessor to modern projectors and was commonly used in educational and entertainment settings.


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