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Q. 30

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
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Short Answer

A Michelson interferometer uses red light with a wavelength of from a hydrogen discharge lamp. How many bright-dark-bright fringe shifts are observed if mirror is moved exactly ?

Number of Bright-Dark-fringes shifts,

See the step by step solution

Step by Step Solution

Step1: Hydrogen lamp

A hydrogen lamp features a glass lamp enclosure with a radiation-emitting window that receives a body manufactures from a zirconium-cobalt alloy that forms a part of a hydride that is a reservoir for hydrogen or deuterium and allows controlled hydrogen or deuterium liberation from the reservoir.

Step2: Find Distance

The number of passing fringes is calculated as follows:

In our numerical example, we have

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