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?

Options:

Correct Answer: The pattern shifts

Solution:

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

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

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

Correct Answer: Interference pattern shifts.

Step 1: Understand that a Michelson interferometer splits a light beam into two paths using a beam splitter.
Step 2: Each path reflects off a mirror and then returns to the beam splitter.
Step 3: When the two beams combine again at the beam splitter, they create an interference pattern of light and dark fringes.
Step 4: If you move one of the mirrors, it changes the distance that one of the light beams travels.
Step 5: This change in distance alters the phase of the light beam that traveled that path.
Step 6: As a result, the way the two beams combine changes, leading to a shift in the interference pattern.

Interference Pattern – The interference pattern in a Michelson interferometer is created by the superposition of two beams of light that travel different path lengths.
Path Length Change – Moving one of the mirrors alters the distance that one beam travels, which can lead to constructive or destructive interference.