CLASS10 · Physics · Refraction Basics

Exercise and reference answers

Matching pairs

1. Left

   Snell's law

   Right

   n₁ sin θ₁ = n₂ sin θ₂

2. Left

   Refractive index n

   Right

   Speed of light in vacuum / in medium

3. Left

   Light enters a denser medium

   Right

   Bends towards the normal

4. Left

   Light enters a rarer medium

   Right

   Bends away from the normal

5. Left

   Critical angle θc

   Right

   sin θc = 1 / n

6. Left

   Total internal reflection requires

   Right

   Denser → rarer + angle > θc

Instructions

Match each refraction concept to its rule or value.