Answer:
(a) 313nm
(b) 250nm
(c) 301nm
Explanation:
This problem involves the concept of thin-film interference. The scientist observes constructive interference. In this case m = 1.
(a) To find the thickness of the oil at that spot we need to first calculate the wavelength in the oil.
λ = λo/n = 750/ 1.20 = 625nm
λ = wavelength in the material of interest into which light is entering (the oil)
λo = wavelength in the material from which light is coming in or entering.
n = refractive index of the material into which the light is entering.
Light travels from air into the oil. So the refractive index used above is that of the oil and not air.
The formula relating the thickness t to the wavelength is 2t = mλ
m = 1 so,
2t = λ = 625nm
t = 625/2 = 313nm
(b) Supposing the refractive index of the water is now n = 1.50
The wavelength in the oil λ = 750/1.50 = 500nm
The thickness t = λ/2 = 500/2 = 250nm
(c) If the oil has a thickness of 200nm then the wavelength λ = 2t = 2 ×200nm = 400nm
The wavelength in the oil is 400nm. In order to find the wavelength in water we set this wavelength to λo = 400nm. So the wavelength in water seen by the diver is given by the formula
λ = λo/n
n for water is 1.33
λ = 400/1.33 = 300.8nm ≈ 301nm.
Answer:
Blood is a homogenous mixture
Answer:
That insane it might be true because a planet sometimes quoted to be an Earth 2.0 or Earth's Cousin based on its characteristics; also known by its Kepler Object of Interest designation KOI-7016.01) is an exoplanet orbiting the Sun-like star Kepler-452 about 1,402 light-years (430 pc) from Earth in the constellation Cygnus.
Explanation:
When plane is flying in tail wind condition we will have
Now during return journey we can say its would be head wind now
time = 2 + 1 = 2 hours
now add two equations
distance = 360 miles
now from above equation again
Answer:
B
Explanation:
the reason the small turtle has more momentum is because it was less an example is I have two rocks a rock that weighs 1 oz and another rock that weighs half a pound the one that is half a pound Falls faster in the one that weighs an ounce Falls last hopefully that makes sense