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Title: refractive index
Description: this is a presentation for second year of chemical engineering and it circles the refractive index.
Description: this is a presentation for second year of chemical engineering and it circles the refractive index.
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APPLIED PHYSICS-I LAB
REFRACTIVE INDEX
PROJECT PRESENTATION
Bending Of Light
Why does light bend when it moves from one medium to
another?
This occurs due to a phenomenon called
Because different mediums have different refractive
indexes
...
Refraction is the bending of a wave when it enters a medium
where its speed is different
...
The amount of bending depends on the indices of refraction of the
two media and is described quantitatively by Snell's Law
...
Refractive Index
Refractive index is defined as
“The ratio of speed of light in vacuum to its speed in a specific
medium
...
If i is the angle of incidence of a ray in vacuum (angle between
the incoming ray and the perpendicular to the surface of a
medium, called the normal)
and r is the angle of refraction (angle between the ray in the
medium and the normal),
the refractive index n is defined as the ratio of the sine of the
angle of incidence to the sine of the angle of refraction; i
...
,
n = sin i / sin r
...
Refractive Index Formula
Refractive index is dimensionless
...
Refractive index, represented by symbol n, is the velocity of light
in vacuum divided by the velocity of light in a medium
...
The refractive index of
other materials can be calculated from the above equation
...
The table lists the refractive index of
different media
...
52 and that of water nw is
1
...
Since the refractive index of glass is higher than the water, the
speed of light in water is faster than the speed of light through
glass
...
Most of the substances we know have a positive refractive index
having value more than zero
...
Speed Of Light Faster In Air Or Water
The speed of light is faster in water
...
3 and the refractive index of
glass is 1
...
From the equation n = c/v, we know that the refractive index of a
medium is inversely proportional to the velocity of light in that
medium
...
How does the
wavelength?
refractive
index
vary
with
According to the definition of refractive index, speed of light is
the product of frequency and wavelength
...
Whereas the wavelength of the light wave changes based on
refraction
...
Snell's Law
Snell's Law relates the indices of refraction n of the two media to
the directions of propagation in terms of the angles to the normal
...
Solved problems
What is the refractive index of the medium in which the speed
of light is 1
...
5 × 108 m/s
=2
The refractive index of the medium is 2
...
76 × 108 m/s
...
The refractive index of a medium is calculated by the formula:
n = c/v
where c is the speed of light in vacuum
v is the speed of light in the medium
Substituting the values in the above equation, we get
n = (3 × 108)/(1
...
7045
Frequently Asked Questions on Refractive Index
What is refractive index?
What is the formula to calculate the refractive index of a
medium?
What is snell’s law
Title: refractive index
Description: this is a presentation for second year of chemical engineering and it circles the refractive index.
Description: this is a presentation for second year of chemical engineering and it circles the refractive index.