Dual nature bingo

Exercise and reference answers

Clues and terms

1. Clue

   An electron knocked out of a metal by light.

   Item

   Photoelectron

2. Clue

   Least energy an electron needs to escape the surface.

   Item

   Work function

3. Clue

   The minimum frequency below which nothing is emitted.

   Item

   Threshold

4. Clue

   The reverse voltage that drives the photocurrent to zero.

   Item

   Stopping pot

5. Clue

   One quantum of radiation, carrying energy set by frequency.

   Item

   Photon

6. Clue

   Energy gained crossing a potential difference of one volt.

   Item

   Electron volt

7. Clue

   The wave associated with a moving material particle.

   Item

   Matter wave

8. Clue

   Who explained the effect with a quantum of radiation in 1905.

   Item

   Einstein

9. Clue

   Who proposed that moving matter shows wave behaviour.

   Item

   de Broglie

Instructions

Read each clue and tap the term it describes.

Explanation