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It is used to bounce the light beams. There is a seismograph that works on the same principle and thus is immediately responsive to earthquake jolts. There are two beams at an L- shaped angle- yes it could be called perpendicular or Right angles. the light beam goes between them, comes the quake- well the apparatus will shake and record any beam displacement- this applies to the Seismograph, not the other application, but they are similar.

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Q: Why the mirrors are placed perpendicular to each other in Michelson's interferometer?
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Related questions

How many images are formed from two mirrors perpendicular to each other?

If 2 mirrors are placed perpendicular to each other then infinite no of images will be formed because image formed by one mirror will act as the object for the other and vice verse.


What angle are the mirrors in a periscope set?

at 45 degree it is placed


Can the image formed by a plain mirror be obtained on a screen?

Plane mirrors do not create images that can be placed on a screen, only concave mirrors can.


What do concave and convex mirrors have in common?

Both the mirrors produce an virtual image when the object is placed in between the pole and focus . And also obviously both are a part of the category of spherical mirrors.


What is the standard placement of bathroom mirrors?

For aesthetic and practical use, bathroom mirrors should be placed at waist level. The bathroom mirrors should offer a one meter clearance from the ground.


Which mirror show virtual image of object placed in front of it?

Plane Mirror And Other Spherical Mirrors Bulged Outside, Such As Convex Mirrors


How mirrors are placed in a periscope?

There are no mirrors in a periscope - they use prisms. But you could use two at 45 degrees to the object and observer, parallel to one another


How is light redirected in a periscope?

With mirrors. A simple periscope can be constructed out of a vertical tube with mirrors placed at a 45-degree angle at the top and bottom of the tube.


How many images will be formed if two mirrors placed at 60 degree angle?

5


When an object is placed between two parallel mirrors the number of images formed will be?

Infinite.


How many images are formed when two mirrors are placed at a right angle?

3 Images


Why infinite images formed if a candle is placed between two parallel mirrors?

Because - if the mirrors are exactly parallel - they will reflect each others image indefinitely.