A Michelson interferometer operating at a 400 nmnm wavelength has a 3.95-cmcm-long glass cell in one arm. To begin, the air is pumped out of the cell and mirror M2M2 is adjusted to produce a bright spot at the center of the interference pattern. Then a valve is opened and air is slowly admitted into the cell. The index of refraction of air at 1.00 atmatm pressure is 1.00028. How many bright-dark-bright fringe shifts are observed as the cell fills with air?
The computation of the number of bright-dark-bright fringe shifts observed is shown below:
n = 1.00028
Now placing these values to the above formula
So, the number of bright-dark-bright fringe shifts observed is
We simply applied the above formula so that the number of bright dark bright fringe shifts could come
BSydney is concerned about their house, but once the tornado sirens sound and they go down into the shelter, she realizes that the only thing that truly matters is that her family is safe.
Sydney is proven to be dynamic in the story. At first, she looked to be a normal girl who does not do anything serious in her life. However, after losing her house during the tornado strike changes her into a responsible member of her family. She takes every moment of his life in doing something positive. She also cares about her family and her house because she know the pain of losing everthing all at once. When she came to know that the storm will hit again, she develops a feeling that she cannot articulate anything but she accepted the truth and keep on doing the precautionary measures.
The number of bright dark fringe shifts is 35
As per the question:
Wavelength of the light,
Refractive index of air,
Length, d = 3.59 cm
The no. of bright-dark fringe shifts can be calculated by the given formula:
m = 33.5 ≈ 34
The number of bright-dark fringe is 42
As per the question:
Wavelength of light,
Length of the glass cell, x = 3.73 cm = 0.0373 m
To calculate the bright-dark fringe shifts, we use the formula given below:
Now, substituting the appropriate values in the above formula:
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