Title: Define the term diffraction? What is the requirement for maximum diffraction? (2)
1Define the term diffraction? What is the
requirement for maximum diffraction? (2)
2Define the difference between constructive and
destructive interference (3)
3What is the difference between a progressive and
a standing wave (2)
4Define the terms, frequency, wavespeed and wave
length (3)
5How is a standing wave produced? (3)
6Define a node and antinode
7What is the length equivalent to in picture 1 and
3? (2)
8How will the diffraction pattern differ for a
coherent light source and one with white light?
(2)
92
1
3
Which part of the diagram is equivalent to x?
x D
l a
10What features are similar to all transverse waves?
11Why can only transverse waves be polarised?
12What is a reasonable value for the wavelength of
UV light?
13What are the three types of UV? Which type is
most likely to cause cancer?