(a) A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 2.84 cm and the index of refraction of the polymer is n = 1.36, how thick (in cm) would you make the coating? (Assume that the index of refraction of the plane is higher than that of the coating. Also assume that the radar waves are normal to the surface of the coating. Give the minimum thickness that would make the airplane invisible to radar.) 0.52 v cm (b) What If? Newer radar systems now use the VHF and UHF bands in order to detect stealthy aircraft. If a radar system operates with a frequency of 423 MHz (in the UHF band), what minimum thickness of coating (in cm) is needed to render an aircraft invisible to this radar band? 0.13 X cm (c) Will an antireflective polymer coating make the airplane invisible to both the 2.84 cm X-band radiation in part (a) and the 423 MHz UHF-band radiation in part (b)? O Yes, an antireflective polymer coating will make the airplane invisible to both radar systems. O No, an antireflective polymer coating will not make the airplane invisible to both radar systems.

(a) A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 2.84 cm and the index of refraction of the polymer is n = 1.36, how thick (in cm) would you make the coating? (Assume that the index of refraction of the plane is higher than that of the coating. Also assume that the radar waves are normal to the surface of the coating. Give the minimum thickness that would make the airplane invisible to radar.) 0.52 v cm (b) What If? Newer radar systems now use the VHF and UHF bands in order to detect stealthy aircraft. If a radar system operates with a frequency of 423 MHz (in the UHF band), what minimum thickness of coating (in cm) is needed to render an aircraft invisible to this radar band? 0.13 X cm (c) Will an antireflective polymer coating make the airplane invisible to both the 2.84 cm X-band radiation in part (a) and the 423 MHz UHF-band radiation in part (b)? O Yes, an antireflective polymer coating will make the airplane invisible to both radar systems. O No, an antireflective polymer coating will not make the airplane invisible to both radar systems.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: Quartz is a uniaxial birefringent material with ordinary refractive index no = 1.5443 and…

Q: A film on a lens with an index of refraction of 1.5 is 1.0 ×× 10−7−7 m thick and is illuminated with…

Q: Light of frequency = 600 THz is traveling in air which has index of refraction nair = 1.00. It…

Q: A laser generates plane waves of visible light. If you determine the intensity of the waves to be I…

A: Intensity is dependent upon distance as…

Q: (a) A possible means for making an airplane invisible to radar is to coat the plane with an…

A: It is given that,The wavelength is .The refractive index is .The frequency is

Q: )If the refractive index of glass is 1.55 and the refractive index of air is 1.0003, what is the…

A: Critical angle for total internal reflection is defined as, when the incident light ray travelling…

Q: The cylindrical beam of a 10.5-mW laser is 0.880 cm in diameter. What is the rms value of the…

A: The problem is asking for the root mean square (rms) value of the electric field of a laser beam.…

Q: An anti-reflection (AR) coating is often applied to the surface of eye- glass lenses in order to…

A: We can calculate the dielectric constant (r) by using a simplified capacitor model, where r is the…

Q: (a) A sheet of a certain type of glass is transparent but tinted red. To measure its light-absorbing…

A: Wavelength of red light wavelength of blue light Frequency of red light = Frequency of blue light =

Q: A possible means for making an airplane invisible to radar is to coat the plane with an…

A: 1.According to the given question , we have to make an airplane invisible to radar is to coat the…

Q: A beam of unpolarized light of intensity 9.53E3 W/m2 passes through a series of ideal polarizing…

A: Given:Intensity of unpolarized light, lo =9.53E3 W/m2

Q: A colloid consists of particles of one type of substance dispersed in another substance. Suspensions…

A: Visible light is used for Bragg reflection experiments on colloidal crystals because the spacing…

Q: A circular radar antenna on a Coast Guard ship has a diameter of 2.10 m and radiates at a frequency…

Q: A possible means for making an airplane invisible to radar is to coat the plane with an…

Q: The GPS network consists of 24 satellites, each of which makes two orbits around the earth per day.…

Q: Problem 7. After a car is painted, a highly reflective coating is sprayed on to make the car look…

Q: The region of the EMR spectrum in which the ground-penetrating radar is classified is

Q: On a data network, Ping measures the round-trip time of messages. Ping at long distance is limited…

A: Given: The length of the cable: l=30000 km=3×104 km=3×107 m Refractive index: μg=1.5 We know that…

Q: What average intensity does a GPS receiver on the ground, directly below the satellite, receive?…

A: Part(a) What average intensity does a GPS receiver on the ground, directly below the satellite,…

Q: A possible means for making an airplane invisible to radar is to coat the plane with an…

Q: An engineer, investigating the behavior of radio waves, builds a box 7.20 m long. Inside the box at…

A: Given that: Length of box, l=7.20 m Wavelength, Let minimum height required is h meter

Q: A coating is being applied to reduce the reflectivity of a pane of glass to light with a frequency…

A: Given Datac=3×108 m/sμ=1.537ν=4.14×1014Hz

Q: A possible means for making an airplane invisible to radar is to coat the plane with an…

A: The expression for the destructive interference is,

Q: refractive index n₁

A: A: Determine the critical angle θ_c at the interface.The critical angle is the angle of incidence at…

Q: A possible means for making an airplane invisible to radar is to coat the plane with an…

A: Wavelength ( λ ) = 3.30 cm Refractive index ( n ) = 1.40 Let h is the thickness required

Q: (c) The electric fields from two e/m waves are described by E1 = 10.0 cos(kz – wt) N/C and E2 = 15.0…

A: Concepts used: Resultant electric field of multiple waves is found by principle of superposition of…

Q: A possible means for making an airplane invisible to radar is to coat the plane with an…

A: Find the thickness of the coating makes on the polymer. 2nt=m+12λt=m+12λ2n

Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

(a) A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 2.84 cm and the index of refraction of the
polymer is n = 1.36, how thick (in cm) would you make the coating? (Assume that the index of refraction of the plane is higher than that of the coating. Also assume that the radar waves are
normal to the surface of the coating. Give the minimum thickness that would make the airplane invisible to radar.)
0.52
cm
(b) What If? Newer radar systems now use the VHF and UHF bands in order to detect stealthy aircraft. If a radar system operates with a frequency of 423 MHz (in the UHF band), what minimum
thickness of coating (in cm) is needed to render an aircraft invisible to this radar band?
0.13
cm
(c)
Will an antireflective polymer coating make the airplane invisible to both the 2.84 cm X-band radiation in part (a) and the 423 MHz UHF-band radiation in part (b)?
O Yes, an antireflective polymer coating will make the airplane invisible to both radar systems.
O No, an antireflective polymer coating will not make the airplane invisible to both radar systems.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

If the polypropylene has a refractive index of 1.5, what is the wavelength in a CD laser light whose wavelength in the air is 790 nm?
Question 2
If the polypropylene has a refractive index of 1.5, what the wavelength of the laser light whose wavelength in the air is 790 nm would be in the propylene?
Astronomers observe the chromosphere of the Sun with a filter that passes the red hydrogen spectral line of wavelength 656.3 nm, called the H, line. The filter consists of a transparent dielectric of thickness d held between two partially aluminized glass plates. The filter is held at a constant temperature. (a) Find the minimum value of d that produces maximum transmission of perpendicular H, light if the dielectric has an index of refraction of 1.494. (Assume that the glass's refractive index exceeds 1.494.) nm (b) If the temperature of the filter increases above the normal value, increases its thickness, what happens to the transmitted wavelength? (Its index of refraction does not change significantly.) O It increases. O It decreases. O It remains unchanged. (c) The dielectric will also pass what near-visible wavelength? One of the glass plates is colored red to absorb this light. nm Additional Materials O eBook
(a) A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 2.72 cm and the index of refraction of the polymer is n = 1.80, how thick (in cm) would you make the coating? (Assume that the index of refraction of the plane is higher than that of the coating. Also assume that the radar waves are normal to the surface of the coating. Give the minimum thickness that would make the airplane invisible to radar.) cm (b) What If? Newer radar systems now use the VHF and UHF bands in order to detect stealthy aircraft. If a radar system operates with a frequency of 441 MHz (in the UHF band), what minimum thickness of coating (in cm) is needed to render an aircraft invisible to this radar band? cm (c) Will an antireflective polymer coating make the airplane invisible to both the 2.72 cm X-band radiation in part (a) and the 441 MHz UHF-band radiation in part (b)? Yes, an antireflective polymer coating will…
What is the index of refraction of a material in which the red-light wavelength is 495 nm? Wavelength of red-light in vacuum is 692 nm.
How thick is a layer of oil floating on a 52cm bucket of water. You measure your laser beam to take 2.33 ns going straight through the layers