Poster settings

Pick a color and layout for your question share poster.

Color theme

Custom color #155E75

Poster style

QUIZERLAND

Optics

CAN YOU ANSWER?

Question

Primary rainbow is caused by?

A Diffraction by dust only

B Polarization in air only

C Refraction and reflection in raindrops

D Only reflection from clouds

Shahzad Mahota @shahzad-mahota · Optics

Wed · Oct 14, 2026 quizzez.qaydum.com

Download a poster with the question and options — no score, just the challenge.

Link copied