Question

In searching the bottom of a pool at night, a watchman shines a narrow beam of light from his flashlight, 1.3 m above the water level, onto the surface of the water at a point d = 2.8 m from his foot at the edge of the pool.

Where does the spot of light hit the bottom of the h = 2.3-m-deep pool? Measure from the bottom of the wall beneath his foot.

Answer #1

A laser is aimed at the top of a pool of water. The beam makes
an angle of 32 degrees to the normal to the water's surface. If the
pool of water is 2.3 m deep with a flat bottom, where will the
light beam hit the bottom of the pool relative to its entrance
point on the air–water interface. Use nair = 1 and nwater = 1.33
for your calculations.

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....

You put a mirror at the bottom of a 1.3-m-deep pool. A laser
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mirror, reflects, and comes back out of the water.
Part A
How far from the water entry point will the beam come out of the
water?
Express your answer with the appropriate units.
dd =
nothingnothing

A silver coin sits on the bottom of a swimming pool that is 4
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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...

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A light source at the bottom of a 4.8-m-deep water pool sends a
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You are standing at the edge of a pool looking down at an angle
phi. Phi is the angle that would let you see the bottom corner of
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1.)A manganese vapor laser beam is reflected from the surface of
a CD onto a wall. The brightest spot is the reflected beam at an
angle equal to the angle of incidence. However, fringes are also
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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
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