Fuel cells have been developed that can generate a large amount of energy. For example, a hydrogen fuel cell works by combining
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Answer:
The minimum thickness of the oil is 77.55 nm
Explanation:
Given:
Refractive index of oil
Refractive index of water
Wavelength of light m
From the equation of thin film interference,
The minimum thickness is given by,
Where ,
thickness
Here we have to find minimum thickness so we use
m
nm
Therefore, the minimum thickness of the oil is 77.55 nm