The Muller-Lyer illusion is where two lines of identical length appear to be
A) Of unequal length
B) Of equal length
C) Different colours
D) Moving in different directions

Question

Quizplus · Accepted Answer

The Muller-Lyer illusion involves two lines of identical length appearing to be of unequal length due to the addition of arrow-like tails at the ends of the lines, which tricks the brain into perceiving them as different lengths.

The Muller-Lyer Illusion Is Where Two Lines of Identical Length