A physics teacher wants to teach her class about wave-particle duality.
a. a State what is meant by the term *wave-particle duality*. [1]
b. b Suggest a demonstration the teacher could use to show that light behaves like
- i waves. [1]
- ii particles. [1]
c. c In order to show her students that particles behave like waves, the teacher chooses to show her students a demonstration of electron diffraction by a crystal of graphite. Outline briefly the main features of her demonstration. [2]