1 ) The following diagram represents the interference pattern created by two point sources. Clearly and carefully draw all possible nodal lines. Carefully measure the wavelength of these waves. Their speed is 3.2 cm/s. Find their frequency. Calculate the angle to the second nodal line, Discuss the validity/meaning of this calculated result. (18) indecurate 146 f = ? V=fx I Sinez = ( n- 2 ) 4 1 = 1. 30 62 = Sin-' ( (n - 2 ) ( 2 ) ) , n= z CM 8 8. 4 7 3:30) =2. 4 6 ISH= = 36. 22150 . frequing :32. SHz :. the comple to the second modalline is 3GO. 2) In the space below, clearly and neatly sketch a graph of light intensity versus position on the screen for a double slit interference pattern. Label only those features which are produced entirely due to the presence of two slits, including their sizes on the screen. (14)SPH 4U 3) in the space below, clearly and neatly sketch a graph of light intensity versus position on the soren UD a single slit interference patter. Label its features, including their sizes on the screen. (12) miniona inconsistut specks Secondup may. telvary mul