Which one does not belong

Exercise and reference answers

Questions

1. Items

   1. Zinc
   2. Carbon
   3. Cadmium

   Odd item

   Carbon

2. Items

   1. Einstein
   2. de Broglie
   3. Gravity

   Odd item

   Gravity

3. Items

   1. Wavelength shift
   2. Work function
   3. Threshold

   Odd item

   Wavelength shift

4. Items

   1. Photocurrent
   2. Sound level
   3. Stopping potential

   Odd item

   Sound level

Instructions

Tap the item that does not fit with the others.

Explanation