Question

A narrow beam of light from a laser travels through air

(* n* = 1.00)

and strikes point A on the surface of the water

(* n* = 1.33)

in a lake. The angle of incidence is 52°. The depth of the lake is 3.6 m. On the flat lake-bottom is point B, directly below point A.

(a) If refraction did not occur, how far away from point B would
the laser beam strike the lake-bottom?

m

(b) Considering refraction, how far away from point B would the
laser beam strike the lake-bottom?

m

Answer #1

1. A narrow beam of light from a laser travels through air (n =
1.00) and strikes the surface of the water (n = 1.33) in a lake at
point A. The angle of incidence is 60 degrees. The depth of the
lake is 3.3 m. On the flat lake-bottom is point B, directly below
point A. (a) If refraction did not occur, how far away from point B
would the laser beam strike the lakebottom? (b) Considering
refraction, how...

A ray of light strikes a flat block of glass (n = 1.75) of
thickness 1.00 cm at an angle of 45.0° with the normal. Trace the
light beam through the glass and find the angles of incidence and
refraction at each surface.

a beam of light travels from air into a sheet of glass having
refractive index n.
a if we increase n, the angle of incidence, decreases
b if we double the angle of incidence, the angle of reflection
also doubles
c the angle of refraction will be greater than the angle of
incidence \
d if the angle of incidence is large enough, the light will be
totally reflected back into the air
e if we increase the angle of...

A narrow beam of light containing red (660 nm) and blue (470 nm)
wavelengths travels from air through a 1.60 cm thick flat piece of
crown glass and back to air again. The beam strikes the glass at a
25.0° incident angle.
(a) At what angles do the two colors emerge from the glass?
red °
blue °
(b) By what distance (in cm) are the red and blue separated when
they emerge?
cm

A parallel beam of light from a He-Ne laser, with a wavelength
633 nm, falls on two very narrow slits 0.070 mm apart.
Part A
How far apart are the fringes in the center of the pattern on a
screen 4.1 m away?

a submarine is 3.00 x 10^2 m horizontally from shore and 1.00 x
10^2 m beneath the surface of the water (n=1.33). A laser beam is
sent from the submarine so that the beam strikes the surface of the
water 2.10 x 10^2 m from the shore. A building stands on the shore
and the laser beam hits a target at the top of the building. The
goal is to find the height of the target above sea level.
(a)...

Light first travels through air (n = 1.00) and then impinges an
oil drop (n = 1.20) that is floating on a layer of water (n = 1.33)
that sits on glass (n = 1.50). List every surface boundary where a
180° phase shift would be observed for reflected light.
Which of the following must be the same for two rays of light to
be considered to be coherent? Choose all that apply from the
following: (a) frequency, (b) wavelength,...

Light travels inside a diamond (n=2.42), and is incident upon the
surface with air (n=1.00) on the other side.
a) If
the angle of incidence is 15 degrees, what is the angle of
reflection?
b) If
the angle of incidence is 15 degrees, what is the angle of
refraction?
c) What
is the critical angle at which total internal reflection will
occur? If there is no critical angle, explain why.
Please enter your answers in the space below and email your
work.

A beam of light is emitted from the bottom of a pool of water.
The pool is 4 meters deep. The index of refraction of water is
1.33.
(a) If the light shines up from the horizontal at an angle of
50◦, what is the angle from horizontal that the refracted beam
exits the water?
(b) You want to shine the light up at a point on the surface of
the pool at which the light is totally internally reflected....

A beam of light traveling in air strikes a glass slab at an
angle of incidence less than 90°. After entering the glass slab,
what does the beam of light do?
A) It follows the same path as before it struck the
glass.
B) It follows the normal to the glass slab.
C) It bends away from the normal at the point of
contact.
D) It bends closer to the normal at the point of
contact.
E) It slows down.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 20 minutes ago

asked 24 minutes ago

asked 54 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago