T48:03 2728Ba- VPN @ 18% TO + I normal to morer (c) refraction Incident int emulive thelex 8. Determine whether a wave model or a particle model is best to use in each of the following situations. (a) light travelling from the Sun to Earth (b) energy travelling for TV, radio, X-rays, and so on VT4 4:06 2A28BA- VPN @ 35% K TO S + 4. A student takes the following data from a ripple tank experiment where two point sources are in phase: n=3, x3=35 cm, L=77 cm, d=6.0 cm, 03=25, and the distance between identical points on 5 crests is 4.2 cm. From these data, you can work out the wavelength in three different ways. (a) Carry out the relevant calculations to determine the wavelength. (b) Which piece of data do you think has been incorrectly recorded? > V W cLawrence Academy 2021 Leading WaveT4 4:06 2A28BA- VPN @ 35% TODD QU O +: 0 The relationship that call be used to Solve Tol all unknown variable mid two-point-source interference pattern is | PS1 - PhS21 = (n -5)2. Practice: 1. (a) Determine the maximum slit width that will produce noticeable diffraction for waves of wavelength 6.3 x 10-4m. (b) If the slit is wider than the width you calculated in (a), will the waves diffract? Explain your answer. V W 2. Two speakers are 1.0 m apart and vibrate in phase to produce waves of wavelength 0.25 m. Determine the angle of the first nodal line