Match each medium to its index

Exercise and reference answers

Matching pairs

1. Left

   Water

   Right

   Index 1.33, critical 48.75

2. Left

   Crown glass

   Right

   Index 1.52, critical 41.14

3. Left

   Dense flint

   Right

   Index 1.62, critical 37.31

Instructions

Tap a medium, then tap the value that goes with it.

Explanation