Answer:
200 nm.
Explanation:
The minimum thickness can be found using the following equation:

Where:
t: is the thickness =?
m: is the order of interference = 1 (since it is minimum)
n: is the refractive index = 1.25
λ: is the wavelength = 500 nm

Therefore, the minimum thickness is 200 nm.
I hope it helps you!
gravity is like a gas that sticks us to ground no matter what object is falling they were both fall down at the same time because it doesn't matter the mass it just matters like the curve around them like if the curve and like their sides
Frequency=1/T, where T is the time period.
Reciprocal of frequency = T or it can be written as T = 1/f, where f is frequency.
I believe the two ways to increase an object’s potential energy, is either by an object’s placement or by an object moving up a gradient. So the higher the object is according to its initial height, the higher the potential energy. And when an object is at a constant velocity moving up a hill, the gravitational potential is increasing, while the kinetic energy is decreasing.