Question 1
Light waves and water waves can both be reflected.
A student used a ray box and a mirror to investigate the reflection of light.
Figure 1 shows some of the apparatus used.
The student measured angle A and angle B.
What equipment should the student have used to measure each angle?
[1 mark]
The student moved the ray box and changed the direction of the ray of light.
The student recorded different pairs of values of angle A and angle B.
Table 1 shows the results.
Figure 2 shows an incomplete graph of the results.
Complete Figure 2.
You should:
• label the y-axis
• plot the remaining data from Table 1
• draw a line of best fit.
[4 marks]
What is the relationship between angle A and angle B ?
Tick (✓) one box.
[1 mark]
Figure 3 represents a water wave.
Which letter represents the amplitude of the water wave in Figure 3 ?
Tick (✓) one box.
[1 mark]
Which letter represents the wavelength of the water wave in Figure 3 ?
Tick (✓) one box.
[1 mark]
A water wave in a ripple tank has a wave speed of 0.125 m/s.
The wave has a frequency of 2.5 Hz.
Calculate the wavelength of the wave.
Use the equation:
Choose the unit from the box.
[3 marks]
The wave has a frequency of 2.5 Hz.
Calculate the period of the wave.
Use the equation:
[2 marks]