In a Michelson interferometer, what happens to the interference pattern if one o

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Question: In a Michelson interferometer, what happens to the interference pattern if one of the mirrors is moved slightly?

Options:

Correct Answer: The pattern shifts

Solution:

Moving one of the mirrors changes the path length for one of the beams, causing a shift in the interference pattern.

In a Michelson interferometer, what happens to the interference pattern if one of the mirrors is moved slightly?

In a Michelson interferometer, what happens to the interference pattern if one of the mirrors is moved slightly?

Step 1: Understand that a Michelson interferometer splits a beam of light into two beams using a beam splitter.
Step 2: Know that these two beams travel different paths and then recombine to create an interference pattern.
Step 3: Realize that the interference pattern is created by the combination of the two beams, which can either add together (constructive interference) or cancel each other out (destructive interference).
Step 4: When one of the mirrors is moved slightly, it changes the distance that one of the beams travels.
Step 5: This change in distance alters the phase of the light wave from that beam when it recombines with the other beam.
Step 6: As a result, the interference pattern shifts, which can be seen as a movement of bright and dark spots.

Interference Pattern – The interference pattern in a Michelson interferometer is created by the superposition of two beams of light that have traveled different path lengths.
Path Length Change – Moving one of the mirrors alters the distance that one of the light beams travels, which affects the phase difference between the two beams.
Fringe Shift – A slight movement of a mirror results in a shift of the interference fringes, which can be observed as a change in the pattern.