a. Explain what is meant by the diffraction of a wave.
b. This diagram shows waves, in a ripple tank, spreading out from two slits.

Copy this diagram. On your diagram, sketch:
i. A line showing points along the central maximum–label this line 0
ii. A line showing the points along first maximum–label this line 1
iii. A line showing points along one of the first minima–label this line min.
c. The centres of the slits are 12 cm apart. At a distance of 60 cm from the barrier, the first maxima are 18 cm either side of the central maximum.
Calculate the wavelength of the waves. 

Transcribed Image Text:

Figure 13.31