Final answer:
To calculate the phase difference between waves from the top and one third from the bottom of the slit to a point on a screen, you can use the concept of path difference. The path difference is the difference in distance traveled by the waves from the two sources. By using the given information of the slit width and the wavelength, you can calculate the exact phase difference.
Step-by-step explanation:
The phase difference between waves from the top and one third from the bottom of the slit can be found using the concept of path difference.
The path difference is the difference in distance traveled by the waves from the two sources. In this case, the top of the slit acts as one source and one third from the bottom of the slit acts as the other source.
The path difference can be calculated using the formula:
Path Difference = difference in distances between the point and the two sources
The phase difference can then be calculated by dividing the path difference by the wavelength of the wave.
In this specific scenario, the distance between the screen and the slit is given as 2.0 m horizontally and 10.0 cm vertically from the center.
By using the given information of the slit width and the wavelength, you can calculate the exact phase difference between the waves from the top and one third from the bottom of the slit to the screen at the specified point.