Odd one out: wave words

Exercise and reference answers

Questions

1. Items

   1. Amplitude
   2. Wavelength
   3. Frequency
   4. Density of gold

   Odd item

   Density of gold

2. Items

   1. Refractive index
   2. Node
   3. Antinode
   4. Stationary wave

   Odd item

   Refractive index

3. Items

   1. Transverse
   2. Radioactive
   3. Longitudinal
   4. Progressive

   Odd item

   Radioactive

Instructions

Tap the one that does not belong.

Explanation