An object is attached to the bottom of a glass plate with index
of refraction 1.5. Three light rays (a, b, c) emanating from the
object are shown; they make angles of 0o (a), 30o (b), and 60o (c)
with the normal. An air-filled gap separates the glass plate from
the front lens of an optical instrument that is used to view the
object. The lens is also made of glass with index of refraction 1.5
We are interested in...
The glass core of an optical fiber has an index of refraction 1.60.
The index of refraction of the cladding is 1.49.
A) What is the maximum angle a light ray can make with the wall of
the core if it is to remain inside the fiber?
Express your answer with the appropriate units.
The index of refraction for violet light in silica flint glass
is 1.66, and that for red light is 1.62. What is the angular spread
of visible light passing through a prism of apex angle 60.0
Two glass lenses with index of refraction 1.50 are ground such that
the front of each lens is convex with radius 1.0 m, and the back of
each lens is concave with radius 2.2 m. A 4 cm tall object is
placed 4.5 m from the first lens, and the lenses are 3 m
apart.
a) What is the focal length of each lens?
b) Where will the image from the first lens be?
c) Where will the final image...
A paperweight is made of a solid glass hemisphere of index of
refraction 1.59. The radius of the circular cross section is 4.0
cm. The hemisphere is placed on its flat surface, with the center
directly over a 2.0 mm long line drawn on a sheet of paper. What
length of line is seen by someone looking vertically down on the
hemisphere? mm
The index of refraction in flint glass for these components of
white light - blue, yellow, and red colors are 1.639, 1.627, and
1.622 respectively. (a) Calculate, in nanometers, to four
significant figures, the wavelengths of these colors in flint glass
(b) During the time the blue light travels 1.000 m in flint glass,
the red light will travel (1) more than, (2) less than, (3) exactly
1.000 m. (c) Calculate the difference in the distance traveled by
the two...
True and False
15 The index of refraction is about 7.8 for glass.
16. Energy is always conserved.
17. A car traveling 40 miles in ½ hour is traveling at 20
mph.
18. 40 o C is hotter than 40o F .
19. Objects with a density less than 1000 kg/m3
float.
20. Like charges repel and unlike charges attract
21. Electric current is more dangerous than voltage.
22. Protons and electrons are found in the nucleus
of atoms.
23...
Unpolarized light is incident on a waveguide made of a dense
glass (index of refraction n2 ) that is coated with a
layer of quartz (index of refraction n3). The waveguide
is immersed in a medium with index of refraction n1.
Assume the wavelength of of the incident light is 500
nm, n1= 1.00, n2= 1.80 and n3 =
1.45.
A) The speed of light in the dense glass is most nearly ["2.25",
"1.875", "2.00", "1.50", "3.00", "1.67"] x 108...
The walls of a soap bubble have about the same index of refraction as that of plain water, n=1.33, There is air both inside and outside the bubble. ( a) What wavelength ( in air) of visible light is most strongly reflected from a point on a soap bubble where its wall is 290 nm thick? To what color does this correspond?( b) Repeat part ( a) for a wall thickness of 340 nm.
A plate of glass with parallel faces having a refractive index of 1.52 is resting on the surface of water in a tank. A ray of light coming from above in air makes an angle of incidence 36.0 with the normal to the top surface of the glass. What angle does the ray refracted into the water make with the normal to the surface? Use 1.33 for the index of refraction of water.