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Refractive Index
(i) Refractive index of a medium is that characteristic which decides speed of light in it.
(ii) It is a scalar, unit less and dimensionless quantity.
(iii) Absolute refractive index :
When light travels from vacuum to any transparent medium then refractive index of medium w.r.t. vacuum is called it's absolute refractive index i.e. vacuumµmedium = c/v
Absolute refractive indices for glass, water and diamond are respectively µg = 3/2 = 1.5, µw = 4/3 = 1.33 and µD = 12/5 = 2.4
(iv) Relative refractive index :
When light travels from medium (1) to medium (2) then refractive index of medium (2) w.r.t. medium (1) is called it's relative refractive index i.e. 1µ2 = µ2/µ1 = v1/v2 (where v1 and v2 are the speed of light in medium 1 and 2 respectively).
(v) When we say refractive index we mean absolute refractive index.
(vi) The minimum value of absolute refractive index is 1. For air it is very near to 1. ( 1.003)
What else can I help you with?
What are the differences between an airtrain and a vene?
what are the differences between and airtrain and a vene ?? what are the differences between and airtrain and a vene ??
If the speed of light was the same in all materials would a lens cause light rays to bend?
No. Without refraction at a boundary between media with different refractive indices, lenses wouldn't work. The only way we would have of forming real images would be with curved mirrors.
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nothing
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not in my books
Can relative refractive index between two media be less than unity?
No, the relative refractive index between two media cannot be less than unity. The relative refractive index is defined as the ratio of the speed of light in a vacuum to the speed of light in the medium, and since the speed of light is always slower in a medium than in a vacuum, the relative refractive index is always greater than or equal to 1.
Can relative refractive index between 2 media be less than unity?
yes
What is the relationship between viscosity and refractive index?
There is no direct relationship between viscosity and refractive index. Viscosity relates to the resistance of a fluid to flow, while refractive index is a measure of how much light bends as it passes through a substance. However, the refractive index of a substance may change with temperature, which can in turn affect its viscosity.
What is the value of absolute or relative refractive index?
The absolute refractive index is a measure of the speed of light in a medium compared to its speed in a vacuum, while the relative refractive index compares the speed of light between two different media. Both values help determine how light is bent or refracted as it passes through different materials.
What is the prediction of the relative bond energies needed to break?
The bonding energy depends on differences between electronegativities.
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The differences in spectrum are mainly due to: * Differences in temperature between the stars * Differences in chemical composition * Differences in relative movement (redshift / blueshift, due to the Doppler effect)
When a ray passes through two parallel slabs what will be the angle of deviation?
It depends on (a) the angle of incidence, and (b) the relative refractive indices of the slabs as well as the medium on either side of them and between them.
What differences between China and Japan from 1500 to 1800 had the principal consequences for their relative positions at 1800?
Prof. Baumer much lol.
How can exchange rates change to reduce wage differences between countries?
A fall in a country's exchange rate will lower its relative wage, and a rise in a country's exchange rate will raise its relative wage.Microeconomics
What is the differences between relative humidity and humidity?
Humidity is the amount of water vapor present in the air. The relative humidity is the measure of the amount of water vapor present in the air compared to the amount needed for saturation.
What is refractive angle?
the angle between the refracted ray and the normal
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The most apparent difference between horses and ponies is their size. Apart from this, ponies generally have a more stocky build and are stronger relative to their size.
