Chapter 24, Problem 9MCQ

Multiple Choice Questions

You shine a green laser beam ( $\lambda =530\text{ nm}$) on a grating and observe seven bright beams behind the grating. Which of the following changes to the experiment (keeping the other parameters constant) could increase the total number of bright beams? Select all that are correct.

a. Using a grating with more slits per millimeter

b. Using a grating with fewer slits per millimeter

c. Using a red laser ( $\lambda \text{= 050 nm}$) d Using a blue laser ( $\lambda \text{= 450 nm}$)

e. Increasing the distance between the laser and the grating

f. Decreasing the distance between the laser and the grating

g. Immersing all of the equipment in water