Consider the light passing from a means of refractive index
n1 to another of index n2....
Consider the light passing from a means of refractive index
n1 to another of index n2. Use the Fermat
principle to minimize travel time
and
deduce the law of refraction: n1sen (θ1) =
n2sen (θ2).
Consider a beam of light passing from air into glass (refractive
index 1.5) at an angle of 30 degrees from vertical. Calculate
- The angle of the reflected light
- The angle of the refracted light
- The intensity of the reflected light
- The intensity of the refracted light
A beam of yellow light (420 nm) travels from air (refractive
index n1=1.00) to glass (n2=2.50) at an incident angle θ1 of 60°.
Some light is reflected and some refracted. (a) What’s the
reflection angle θ2 and relative intensity (as percent of the
original intensity) of the reflected beam? (b) What’s the
refraction angle θ2 ’? (c) What’s the speed of this light in the
glass? (d) What’s the energy of one photon of this light? c = 3.00
×...
1.
A ray of light passes from one substance (n1) into
another (n2). In the scenario where n1 <
n2, what is the relationship between the speed of light
at n1 with respect to the speed of light at
n2?
greater than
equal to
less than
n/a
2.
When a ray of light hits a flat mirror, what is the relationship
between the angle of incidence to the angle of reflection?
greater than
equal to
less than
dependent upon n...
light travels from air through two layers with index of
refraction n1 and n2, respectively. If upon entering each layer
light loses 10% of its velosity, what is the index of refraction
n2
The refractive index of diamond is 2.4. For unpolarized light
incident from vacuum onto a polished diamond surface, calculate the
angle of refraction for which the reflected light is fully
polarized. Calculate the ratio between the reflected light
intensity and the incident light intensity, and specify the
polarization state of the reflected light
Refractive index of core of an optical fibre is 1.46 and its
diameter is 250μm. Light propagates along the axis of the fibre .
If the fibre bends at one point with radius of curvature R,
Calculate the minimum value (critical radius of curvature
Rmin) to sustain the light inside, without escaping from
the fibre.
Discuss the factors on which the critical radius of curvature
may depend? Does it depend on the colour of light propagating
through the fibre? ...
Light enters medium 2 from medium 1 whose refractive index is
1.5 at an angle of incidence of 50. If the angle of refraction in
medium 2 is 25, calculate the refractive index of medium 2.4.0424.3610.3542.7191.243When light enters a medium of refractive index 1.1from a medium of refractive index 2, for whichof the following angle of incidence would bothreflection and refraction take place? 36.4931.22637.60135.49934.802
Light is incident along the normal on face AB of a glass
prismwith refractive index 1.52.
A. Find the largest value the angle α can have withoutany
light refracted out of the prism at face AC if the prism isimmersed
in air.
B. Find the largest value the angle α can have withoutany
light refracted out of the prism at face AC if the prism isimmersed
in water.
air refactive index = 1.00029
water refractive index = 1.33
. Light travels at different speeds through materials due the
refractive index of that material. Given that I have a transparent
polymer material, would light travel faster or slower through it if
it (a) have zero stress on it or (b) have a substantial, but still
elastic, stress on it (say 20 MPa for HDPE)? Explain.
A certain ultraviolet light has a wavelength of 160nm in
carbon di-sulfide (refractive index = 1.6). The wavelength of the same light in diamond (refractive
index = 2.4) will beGroup of answer choices83 nm.107 nm.160 nm.200 nm.240 nm.