9th Grade Optics Diffraction Quizzes , Questions & Answers

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9th Grade

Top Trending Optics Diffraction Quizzes

This quiz on diffraction in everyday life features 20 questions and is designed for students in Grade 9. You will explore how light waves bend around obstacles and create patterns, which is essential for understanding many...

Questions: 20 | Attempts: 15 | Last updated: Mar 7, 2026

Sample Question 1
Why can you hear someone speaking from another room even if you can't see them?

Refraction of sound only

Diffraction of sound around the doorway

Polarization of sound

Dispersion of sound

Sample Question 2
Sound waves usually diffract more than light waves because sound wavelengths are much larger.

True

False

Sample Question 3
A CD shows rainbow-like colours mainly due to:

Refraction

Diffraction and interference

Polarization

Absorption

Recent Optics Diffraction Quizzes

Diffraction Basics Quiz: Bending/Spreading of Waves

This quiz features 20 questions about diffraction, which is the bending and spreading of waves, and is designed for students in Grade 9. You will explore key concepts like wave behavior, interference patterns, and the...

Questions: 20 | Attempts: 15 | Last updated: Mar 7, 2026

Sample Question
Diffraction is when a wave:

Speeds up in a new medium

Bends/spreads when it passes an edge or through an opening

Bounces off a surface

Changes into heat