Page 10 - form 5 physics chapter 1
P. 10

Use a ripple
tank

Draw a ray
diagram to
show
refraction of
waves.

Example 1                            (a) the wavelength
A plane wave has a wavelength of 2
cm and a velocity of 8 cm s-1 as it  (b) the frequency
moves over the surface of shallow    of the wave in the area of greater
water. When the plane wave moves     depth?
into an area of greater depth, its
velocity becomes 12 cm s-1. What is

                                                                         10
   5   6   7   8   9   10   11   12   13   14   15