Passage IV

When waves of laser light pass through a narrow slit and onto a screen, they form a pattern of light and dark bands on the screen, as shown in Figure 1.

This phenomenon is called diffraction, and the pattern is called a diffraction pattern.

In each of the following studies of diffraction. students directed laser light through a slit, forming a diffraction pattern on a screen. They measured y1 the distance from the center of the brightest band in the pattern to the center of one of the 2 adjacent dark bands. In each study, x was the distance between the slit and the screen.

Study 1

In Trials 1-4, the slit width was varied, the wavelength of the laser light was fixed, and x was 6.00 m. The results are shown in Table 1.

Study 2

In Trials 5-8, the slit width was 0.24 mm, the wavelength (color)of the laser light was varied, and x was 6.00 m. The results are shown in Table 2.

Study 3

In Trials 9-12, the slit width was 0.24 mm, the wavelength was the same as in Study 1, and x was varied. The results are shown in Table 3.

22. Suppose that the procedure performed in Trial 2 was repeated, except that x was 9.00 m. Based on the results of Studies 1 and 3, would y1 more likely have been greater than 15.0 mm or less than 15.0 mm?

Answer and Explanation

Your Answer is

Correct Answer is F

Explanation

The other conditions of Trail 2 remain the same, only change x to 9.00 m, at this time Trail 2 and Trail 11 are the same;

So according to Trail 11 in table 3, y1 at this time should be It is larger than 15 mm, and it can be seen from table 3 that the larger x is, the larger y1 will be, and the F option meets