SPH4U Unit 4 Assignment - Light Waves 20 1. A two-point source interference pattern is generated in a swimming pool. A piece of Styrofoam, located on the second nodal line, is 12.0 m from one source and 20.0 m from the other source. One wave crest takes 2.0 s to travel the 35.0 m width of the pool. a. Find the speed of the waves. [3 marks] b. Find the wavelength. [4 marks] c. Find the frequency of the waves. [3 marks] int MacBook Pro G Search or type URL + % & 4 5 6 7 8 9 O R T Y U O2. A student creates a two-point source interference pattern in a ripple tank with two sources operating in phase. A point on the order number 6 maximum is 1.25 m from the centre of the two sources and 48.0 cm from the middle maximum. If the source separation is 2.75 cm, find the wavelength of the waves. [4 marks] 1.25m 48.0cm 2.75cm 3. A double-slit experiment is performed using arslit separation of 0.12 mm with a screen placed 85.0 cm away. There are 16 mm between the first and fifth nodal points. What wavelength of light was used? [3 marks] 4. A light source of 625.nm illuminates two slits that are 1.2m away from a screen. The first order maximum occur at an angle of 10.6. What is the slit separation? [3 marks] Activity Details MacBook Pro G Search or type URL %