Henry must choose which type of smart speaker to use in his home. He asked you to help him decide which one will best suit his n
1 answer:
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Answer:
200 nm
Explanation:
We need a constructive interference to see the bright reflection
we know that where m=1 and
is the wavelength of the gasoline
so
putting the value of m and in thickness equation
so the thickness of the film will be 200 nm