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Which instrument is used for precise measurement of refractive index?
Spectrometer
What should be the base when 81 is written as a power of which the index is 2?
92 = 81
Properties of a ruby?
The chemical composition of ruby is aluminum oxide (Al 2 O3). Its specific gravity is 3.99 to 4.00 and refractive index range is 1.760-1.768 to 1.770-1.779. Ruby's hardness on Mohs scale is 9. It's the next hardest mineral after diamond.
What is the index of refraction of a material if the angle of incidence in air is 50 degrees and the angle of refraction in the material is 40 degrees?
When a ray of light passes from material 1 to material 2: N1 sin θ1 = N2 sin θ2 where N1 & N2 are the refractive indices of the materials, and θ1 is the angle of incidence, θ2 the angle of refraction. From air to the material: N1 = 1.00, θ1 = 40°, θ2 = 50°, N2 = unknown, the index of refraction of the material: → 1.00 x sin 50° = N2 x sin 40° → N2 = 1.00 x sin 50° ÷ sin 40° → N2 ≈ 1.1917 (the index of refraction of the material)
Can the index of refraction ever be less than zero?
No. This would imply that the speed of light in that medium was greater than the speed of light in a vacuum, which is physically impossible according to the theory of relativity. The relative index of refraction can be negative... that is, the speed in the medium may be faster than the speed in the surrounding environment... but the absolute IR cannot be negative.
What is the function of core and cladding in an optic fibre?
in an optical fiber total internal reflection takes place between core and cladding. when core has greater refractive index than cladding. if n1=n2 then their is no TIR.
What is the minimum value of the refractive index?
The minimum value of the refractive index is 1, which corresponds to a vacuum. The refractive index of a medium is always greater than or equal to 1.
Why refractive index of core is lower than cladding in optlical fiber?
because in the fiber optics the transmission of the light waves are through core and cladding is to cover the core
What is the critical angle of a cladding?
The critical angle for the boundary between two materials (such as the core and cladding of an optical fibre) is: θc = arcsign(n2/n1) Where n2 is the refractive index of the cladding layer. and n1 is the refractive index of the core layer. If we use a simply unclad fibre where the core has n1=1.50 and the air surrounding it forms a layer of n2=1.00 θc = 41.8 degrees.
What is the refractive index of vacuum?
The refractive index of vacuum is 1.
Why should the temperature of the sample be controlled during the refractive index measurement?
Controlling the temperature of the sample during refractive index measurement is important because the refractive index of a substance is sensitive to temperature changes. Fluctuations in temperature can alter the refractive index value, leading to inaccurate results. By maintaining a constant temperature, you ensure that the refractive index measurement is reliable and accurate.
What is the standart refractive index of cyclohexene?
The standard refractive index of cyclohexene is approximately 1.465.
What are the applications for single mode fibers?
Hi, Single mode fiber is used to send the data from transmitter to receiver or repeater. In single mode we can only send single signal at a time and hence it is single mode. The Single mode fiber will have core and cladding arranged in such a way that the core has got one refractive index and the cladding has got another refractive index which will be constant through out the fiber.
The refractive index of water is 43 and for glass it is 32 with respect to airwhat is the refractive index of glass with respect to air?
The refractive index of glass with respect to air is determined by dividing the refractive index of glass by the refractive index of air. Therefore, the refractive index of glass with respect to air would be 32/1, which equals 32.
Viva questions regarding refractive index of prism?
What is a prism and how does it relate to the refractive index? Explain how the refractive index of a prism affects the bending of light. How can you experimentally determine the refractive index of a prism?
Light travels slower in a material with greater what?
Light travels slower in a material with greater optical density.
How calcualate the refractive index of petrol?
The refractive index is determined experimentally.
