1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pickupchik [31]
3 years ago
15

When reaching a boundary between two media (1 and 2), an incident ray is partially reflected and partially refracted. The ray is

travelling from media 1 to media 2.
At what angle of incidence is the reflected ray perpendicular to the incident ray? The indexes of refraction for the two media are n1 and n2, respectively.

Express your answer in terms of the variables n1 and n2
Physics
1 answer:
podryga [215]3 years ago
3 0

Answer: critical angle, sin^-1 (n2/n1)

Explanation: the angle of incidence at which the retracted ray makes an angle of 90° with the normal is known as the critical angle.

Snell's law defined refraction mathematically as shown below

n1 sin θi = n2 sin θr

n1 = refractive index of the first medium

n2 = refractive index of the second medium

θi = angle of incidence

θr = angle of refraction

When the refrafted ray is perpendicular to the normal, the angle of refraction (θr) is 90° hence making the angle of incidence (θi) the critical angle θc

By substituting these conditions into the Snell's law, we have that

n1 sin θc = n2 sin 90

According to trigonometry, the value of sin 90 is 1, hence we have that

n1 sin θc =n2

sin θc = n2/n1

θc = sin^-1 (n2/n1)

You might be interested in
Which expressions correctly represent variations of Ohm's law? Check all that apply.
navik [9.2K]

Answer:

V = IR

R = V/I

I = V/R

Explanation:

7 0
3 years ago
1. In a series circuit, if one bulb goes out the other blubs will stay lit.
RideAnS [48]
I think is False
I think is False
5 0
3 years ago
Read 2 more answers
When light strikes an opaque material, which of the following accurately describes what happens to the light rays? Some of the l
ExtremeBDS [4]
<span>None of the light passes through it; some of the light is absorbed as heat but most is reflected off the surface.  This is how you see </span>objects.  reflected light from them hits your eye.  (Opaque means not transparent)
8 0
3 years ago
Read 2 more answers
Rita conducts an experiment on how the amount of precipitation each fall affects
hodyreva [135]

Answer:

Explanation:

As spring season is a yearly phenomenon so, Rita should organize her data on yearly basis. Firstly, she should plan the procedure of her experiment and collect the data according to it. Secondly, identify the attribute of each object of her experiment. Thirdly, she can organize and segregate her data in tabular form, graphical form or diagrammatically.

5 0
3 years ago
What is the voltage across each resistor?
kogti [31]

Answer:

see solution below

Explanation:

The given resistors are connected in series.

Equivalent resistance in series = 30 + 55 + 15

Equivalent resistance in series Rt = 100 ohms

Since the potential difference in the circuit = 36V

Get the current in the circuit first

I = V/Rt

I = 36/100

I = 0.36A

Get the voltage across 30ohms resistor;

V30 = 0.36 * 30

V30  = 10.8volts

Hence the voltage across the 30ohms resistor is 10.8volts

Get the voltage across 55ohms resistor;

V55 = 0.36 * 55

V55  = 19.8volts

Hence the voltage across the 55ohms resistor is 19.8volts

Get the voltage across 15ohms resistor;

V15 = 0.36 * 15

V15  = 5.4volts

Hence the voltage across the 15ohms resistor is 5.4volts

4 0
3 years ago
Other questions:
  • The coriolis effect causes winds to move in a ______ pattern.
    12·2 answers
  • . At a frequency ω1, the reactance of a certain capacitor equals that of a certain inductor.
    6·2 answers
  • Physical science is _______________. Question 2 options: the study of the environment and interaction between living things the
    14·2 answers
  • As long as the net force on a falling object is not zero, the object will...
    15·1 answer
  • Suppose that a 1000 kg car is traveling at 25 m/s. Its brakes can apply a force of 5000N. What is the minimum distance required
    9·1 answer
  • Simplify the expression [9+2(2-4)]/3
    10·1 answer
  • . Which is the transfer of energy as waves moving through space?
    7·1 answer
  • A car of mass 750 kg has an initial speed of 75 mph. Traveling in a straight line, its speed is increased uniformly to 120 mph i
    5·1 answer
  • A magnetic field will move-
    11·1 answer
  • Sarah rides her horse with a constant speed of 12km/h. How far can she travel in 3 hours?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!