10 (a) Fig. 10.1 shows a water wave moving from shallow into deep water. The wavefronts shown represent the crests of the wave. [Figure 10.1]

1. (a)(i)Determine the wavelength of the wave in the shallow water. wavelength =[1]
2. (a)(ii)Calculate the frequency of the wave produced. frequency =[2]
3. (a)(iii)Determine the speed of the water wave in the shallow water. speed =[2]
4. (a)(iv)On Fig. 10.2, draw lines to show what happens to the wavelength, the frequency and the speed of the water wave as it enters the deep water. [Figure 10.2] One line has been drawn for you.[1]
5. (a)(v)The direction of the boundary is now altered. The water wave now enters the deep water from the shallow water at an angle, as shown in Fig. 10.3. [Figure 10.3] On Fig. 10.3, draw the wavefronts in the deep water.[3]
6. (b)(i)State the name of four of the colours in the visible spectrum and place them in order from the smallest wavelength to the largest wavelength. smallest wavelength largest wavelength[2]
7. (b)(ii)A narrow beam of white light can be split into different colours. Fig. 10.4 shows rays of white light emitted from a lamp. [Figure 10.4] Complete Fig. 10.4 to show how a narrow beam is produced from these rays and how a spectrum is shown on the screen. Label your diagram.[4]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.