Is the Calculation of a Radar Antenna's Height at 349 Meters Accurate?

In summary, the conversation discusses a radar antenna located on a cliff that operates at a wavelength of 400m. The height of the cliff is found by analyzing the path of a parallel beam of electromagnetic waves and determining the angle at which the first minimum is recorded. The solution provided in a PDF file is 349 meters, and it is being challenged by the student's teacher.
  • #1
kirpal_06391
3
0
Q. A radar antenna is located atop a high cliff on the edge of a lake operates at a wavelength of 400m. A parallel beam of electromagnetic wave is received by the antenna at E. One ray directly comes to E and other along the path ABE (after reflection at the water surface) the first minimum is recorded when the angle ABF = 35˚. Find the height of the cliff.

Solution has been attached as PDF file.

Now, my real question is, that whether my solution is correct or not, as my teacher has declared it incorrect but I have VERY STRONG feeling that its correct.

Answer given by my teacher is 349 meters.
 

Attachments

  • phy_int.pdf
    862.9 KB · Views: 363
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  • #2
Er.. opinions required before Monday
 
  • #3
On a quick look, the method and answer in the pdf file seem fine.
 
  • #4
Well I need either perfectly correct or incorrect type opinion b'coz I'm going to challenge my teacher on that basis
 

FAQ: Is the Calculation of a Radar Antenna's Height at 349 Meters Accurate?

What is the principle of interference in physics optics?

The principle of interference in physics optics is based on the wave nature of light. When two or more light waves overlap, they can either reinforce or cancel each other out, resulting in a pattern of bright and dark fringes. This is known as interference and is used to study properties of light such as wavelength and intensity.

How does the double-slit experiment demonstrate interference?

In the double-slit experiment, a beam of light is passed through two narrow slits and onto a screen. The light passing through the slits interferes with each other, producing a pattern of bright and dark fringes on the screen. This demonstrates the principle of interference and can be used to measure the wavelength of light.

Can interference occur with other types of waves besides light?

Yes, interference can occur with any type of wave, including sound and water waves. The principle remains the same - when two or more waves overlap, they can either reinforce or cancel each other out, creating a pattern of interference.

How is the phase difference between two waves related to interference?

The phase difference between two waves is a measure of how much they are out of sync with each other. In interference, waves that are in phase (in sync) will reinforce each other, while waves that are out of phase will cancel each other out. This is why we see bright and dark fringes in interference patterns.

What are some practical applications of interference in physics optics?

Interference has many practical applications in physics optics, such as in the design of anti-reflective coatings for lenses and in the creation of holograms. It is also used in interferometry, a technique for measuring small changes in distance, which is used in fields such as astronomy and engineering.

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