While using a Michelson interferometer (shown in Fig.

Chapter 37, Problem 1

(choose chapter or problem)

While using a Michelson interferometer (shown in Fig. 37.13), you see a dark circle at the center of the inter ference pattern. (i) As you gradually move the light source toward the central mirror M , through a dis tance /2, what do you see? (a) There is no change in the pattern. (b) The dark circle changes into a bright circle. (c) The dark circle changes into a bright circle and then back into a dark circle. (d) The dark circle changes into a bright circle, then into a dark circle, and then into a bright circle. (ii) As you gradually move the moving mirror toward the central mirror M , through a distance /2, what do you see? Choose from the same possibilities.