An LED mounted in the wall of a pool sits 1.6 m below the surface and...
An LED mounted in the wall of a pool sits 1.6 m below the surface and emits light rays in all directions. Some rays move forward and upward towards the water/air interface. Approximate the LED as a small source. For the following, explain your reasoning with a diagram. a. What is the critical angle in degrees for total internal reflection of the rays at the water/air interface? Should be ~48.
b. For light rays that escape the pool, what is the smallest angle between the light rays and the normal to the LED surface? Should be ~42
c. What is the greatest distance from the pool wall that light rays escape the surface of the water, in m?
Homework Answers
Add Answer to:
An LED mounted in the wall of a pool sits 1.6 m
below the surface and...
An LED mounted in the wall of a pool sits 1.6 m below the surface and...
An LED mounted in the wall of a pool sits 1.6 m below the surface and emits light rays in all directions. Some rays move forward and upward towards the water/air interface. Approximate the LED as a small source. For the following, explain your reasoning with a diagram. a. What is the critical angle in degrees for total internal reflection of the rays at the water/air interface? Should be ~48. b. For light rays that escape the pool, what is...
In searching the bottom of a pool at night, a security guard shines a narrow beam...
In searching the bottom of a pool at night, a security guard shines a narrow beam of light from his flashlight, above the water's surface, onto the waiter at a point 2.5 m from his foot at the edge of the pool. Where does the light hit the bottom of the pool measured from the wall beneath his foot if the pool is 2.1 m deep. A triangular prism made of crown glass, n = 1.52, with base angles of...
water interface (the surface of the lake), it is partly reflected back into the air and...
water interface (the surface of the lake), it is partly
reflected back into the air and partly refracted
or transmitted into the water. This explains why on the surface of
a lake sometimes you see the reflection of the surrounding
landscape and other times the underwater vegetation.
These effects on light propagation occur because light travels at
different speeds depending on the medium. The index of refraction
of a material, denoted by n, gives an indication of the speed of...
Problem 3: Consider the situation in the figure - a student diver in a pool and an...
Problem 3: Consider the situation in
the figure - a student diver in a pool and an instructor on the
edge, outside the water. Since the indices of refraction of air and
water are different, the light rays coming from the diver and the
instructor are refracted at the surface, changing their apparent
position with respect to each other. The diver sees the instructor
at an apparent angle of θa = 26°, measured from
the normal to the interface.
Randomized
Variables: θa...
A flashlight is held at the edge of a swimming pool at a height h = 2.4 m such that its beam makes an angle of θ = 41 degrees with respect to the water's surface
A flashlight is held at the edge of a swimming pool at a height h = 2.4 m such that its beam makes an angle of θ = 41 degrees with respect to the water's surface. The pool is d = 2.25 m deep and the index of refraction for air and water are n1 = 1 and n2 = 1.33, respectively.what is the horizontal distance, D, from the edge of the pool to the point on the bottom of...
Which statement is false? (A) Light is propagating in water (n=4/3) and strikes a water-air interface...
Which statement is false? (A) Light is propagating in water (n=4/3) and strikes a water-air interface at an angle q to the normal where sin q =5/8; the light will be totally reflected back into the water. (B) Mirages are a result of the fact that the surface of the ground is very hot in the desert. Specifically, the air near the ground is hotter and less dense. Consequently, light rays from a distant object will be refracted and bent...
(8%) Problem 3: Consider the situation in the figure -a student diver in a pool and...
(8%) Problem 3: Consider the situation in the figure -a student diver in a pool and an instructor on the edge, outside the water. Since the indices of refraction of air and water are different, the light rays coming from the diver and the instructor are refracted at the surface, changing their apparent position with respect to each other. The diver sees the instructor at an apparent angle of e, - 33", measured from the normal to the interface Randomized...
1) What is the smallest angle with respect to the normal should light be incident onto...
1) What is the smallest angle with respect to the normal should light be incident onto a water-air interface from the water side so that it does not escape into air (assume the refractive index of water is 1.33): A) 20 B) 10.5 C) 48.8 D) 50.2 2) A fish appears to be 9.00 m below the surface of a pond when viewed almost directly above by a fisherman. What is the actual depth of the fish? (lwater= 1.33) !!...
4. A 2.00 C charged 1.00 g cork ball is suspended vertically on a 0.500 m...
4. A 2.00 C charged 1.00 g cork ball is suspended vertically on a 0.500 m long light string in the presence of a uniform downward-directed electric field of magnitude E-1.00x105 N/C. If the ball is displaced slightly from the vertical, it oscillates like a simple pendulum. (a) Determine the period of the ball's oscillation. (b) Should gravity be included in the calculation for part (a)? Explain. (15) 3. The magnetic field shown in Figure 4 directed into the paper....
In searching the bottom of a pool at night, a security guard shines a narrow beam of light from his flashlight, above the water's surface, onto the waiter at a point 2.5 m from his foot at the edge of the pool. Where does the light hit the bottom of the pool measured from the wall beneath his foot if the pool is 2.1 m deep. A triangular prism made of crown glass, n = 1.52, with base angles of...
water interface (the surface of the lake), it is partly
reflected back into the air and partly refracted
or transmitted into the water. This explains why on the surface of
a lake sometimes you see the reflection of the surrounding
landscape and other times the underwater vegetation.
These effects on light propagation occur because light travels at
different speeds depending on the medium. The index of refraction
of a material, denoted by n, gives an indication of the speed of...
Problem 3: Consider the situation in
the figure - a student diver in a pool and an instructor on the
edge, outside the water. Since the indices of refraction of air and
water are different, the light rays coming from the diver and the
instructor are refracted at the surface, changing their apparent
position with respect to each other. The diver sees the instructor
at an apparent angle of θa = 26°, measured from
the normal to the interface.
Randomized
Variables: θa...
(8%) Problem 3: Consider the situation in the figure -a student diver in a pool and an instructor on the edge, outside the water. Since the indices of refraction of air and water are different, the light rays coming from the diver and the instructor are refracted at the surface, changing their apparent position with respect to each other. The diver sees the instructor at an apparent angle of e, - 33", measured from the normal to the interface Randomized...
1) What is the smallest angle with respect to the normal should light be incident onto a water-air interface from the water side so that it does not escape into air (assume the refractive index of water is 1.33): A) 20 B) 10.5 C) 48.8 D) 50.2 2) A fish appears to be 9.00 m below the surface of a pond when viewed almost directly above by a fisherman. What is the actual depth of the fish? (lwater= 1.33) !!...
4. A 2.00 C charged 1.00 g cork ball is suspended vertically on a 0.500 m long light string in the presence of a uniform downward-directed electric field of magnitude E-1.00x105 N/C. If the ball is displaced slightly from the vertical, it oscillates like a simple pendulum. (a) Determine the period of the ball's oscillation. (b) Should gravity be included in the calculation for part (a)? Explain. (15) 3. The magnetic field shown in Figure 4 directed into the paper....
Most questions answered within 3 hours.
-
if a firm producing 100 units at $5.00 each experience
an 80% experience curve, what will...
asked 21 minutes ago -
A solid, uniform disk of radius 0.250 m and mass 53.7 kg rolls
down a ramp...
asked 2 hours ago -
Given the following table of high speed internet access vs.
annual home income:
Home Income
%...
asked 3 hours ago -
A baseball batter hits a 0.145kg baseball straight up into the
air. The baseball leaves the...
asked 3 hours ago -
An FM modulator is tested using
single-tone baseband signal with frequency of 50kHz and a sprectrum...
asked 4 hours ago -
Write the ionic equations for the first stage of salts
hydrolysis.
Anion, Cation?
Na2S
NiSO4
K2SO4...
asked 5 hours ago -
suppose there is a normally distributed population with a mean of
250 and a standard deviation...
asked 6 hours ago -
Question Three
Suppose you as project manager are using the Waterfall
development methodology on a large...
asked 7 hours ago -
Which statement is not true about welfare in Canada?
A.Benefits typically vary based on one's ability...
asked 7 hours ago -
Please help me with FLOWCHART and UML diagram for class,
thank you!
#include <iostream>
#include <fstream>...
asked 8 hours ago -
3. Describe the “logic circuit” of the Lac operon. Which
proteins are bound or not to...
asked 8 hours ago -
Ayesha’s adjusted gross income is $60,000 in 2019. She donated a
piece of artwork with a...
asked 8 hours ago