Multiple choice

Which device is used to project an opaque object?

  1. Slide projector

  2. Magic lamp

  3. Film strip projector

  4. Epidiascope

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An epidiascope is an optical device capable of projecting both transparent (slides) and opaque objects (like pages of a book or photos) onto a screen.