go to site In this experiment one determines the He-Ne Laser light wavelength by Michelson Interferometer. Some basic questions which teacher ask in the lab are given below hope these will help you to explain the concept and understanding of the experiment.
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go here 1Q. What is Interference?
2Q. What is the condition for Interference?
3Q. What are LASER properties and what do you mean by a Coherent Source?
4Q. Why you are using LASER (monochromatic source) why not bulb or sun light, tube light ?
5Q. What is the role of semi silvered glass plate and why one keep it at 45 degree?
6Q. How do you think that semi silvered glass plate will look like?
7Q. Why do you keep compensating plate in the path of light ray, is it transparent or semi silvered plate?
8Q. What about its thickness? is it of same thickness or varies place to place?
9Q. What is the relation between path difference and phase difference?
10Q. Which one is fixed mirror M1 or M2?
11Q. M1 and M2 mirror is at 90 degree or more?
12Q. Where forms the image of M2 mirror by semisilvered glass plate?
13Q. Where thin film of air forms and how?
14Q. How one can change the thickness of thin air film?
15Q. How the two light rays which satisfy the interfere condition at eye piece forms?