Answer:
The question is not complete. Let me explain Michelson interferometer and how to calculate a question like this.
Answer 4.85 *
m
Step-by-step explanation:
The Michelson Interferometer is an instrument which produces interference fringes by splitting a light beam into two parts, it then recombines them after they have travelled different optical paths.
The formula to measure the minute displacement is Δd=m * λ
/2
where m is the number of fringes passing a given point as the movable plane mirror is moved
and λ
is the monochromatic lamp of wavelength
In the question, m = 1600. Let us assume that the wavelength is 606 nm
Solution
Δd=m * λ
/2
Δd=1600 * 606nm/2 = 1600 * 303nm = 484800nm
We convert the nm to m (nm /
)
4.85 *
m