Answer:
The thickness of the oil film is 198 nm.
Explanation:
Given that,
Refractive index of glass plate = 1.60
Refractive index of oil = 1.29
Wavelength = 511 nm
We need to calculate the thickness of the oil film
Using formula of path difference
Where, n = refractive index
t = thickness
= wavelength
Put the value into the formula
Hence, The thickness of the oil film is 198 nm.
The work output of a machine is measured or calculated by measuring the output force and the output distance. Work output is the work done by a simple machine or any type of an engine model, it is the energy output, which for machines is always less than the energy input, due to factors such as friction of the moving parts.
Answer:
Yes, I'm pretty sure it is. That's why I don't click on it!
Answer:
Explanation:By using the sunglasses while looking at If your sunglasses are polarized, instead of only seeing the surface of a lake or river, you will suddenly be able to see through the glare and into the water below.
Another one is by comparing two sunglasses, hold your glasses and another one simultaneously and look through both pairs at the same time. Then, rotate one pair of sunglasses about 60 degrees. If both pairs of glasses are polarized, the overlapping area will darken as they filter out excess light. If your pair isn't polarized, however, you won't notice any difference.
Also it can be determined by simple computer test If you rotate your glasses sideways while looking at a computer monitor through polarized glasses, portions of your screen will become blank or go dark. The same also applicable to LCD display screens such as the ones on a gas pump.
Its (a) and(a)for the other ? and the last one is (d)
