Question 7 (1 point) Two point sources are vibrating in phase producing two-dimensional water wave interference. The first antinodal line on either side of the central maximum will occur at locations where the path difference of the arriving waves is: ON 1/4 X O B) 1/2 A OQ 3/4 X O DI A O EI 2A Question 8 (1 point) Light from a monochromatic source shines on two adjacent, narrow slits. Which of the intensity patterns shown below best illustrates the interference pattern observed? O . MINA . MMMMM