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Half of line has arrows or fins pointing outward. The remaining half has arrows or fins pointing inward. The first half looks longer than the second half. This is the ______________ illusion?

Correct answer: C. Muller-Lyer

  • A. Zollner
  • B. Wundt
  • C. Muller-Lyer
  • D. Poggendroff

Explanation

The Müller-Lyer illusion occurs when equal lines appear unequal because of inward- or outward-pointing arrowheads at their ends. The other named illusions involve different visual arrangements.

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