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Novosadov [1.4K]
3 years ago
14

A beam of light with a wavelength 760 nm in air travels in water. The index of refraction of water is 1.33. What is the waveleng

th in water?
Physics
1 answer:
BabaBlast [244]3 years ago
6 0

Answer:

<em>The wavelength of water = 571.43 nm</em>

Explanation:

Refractive index of water = wave length of light in air/wave length of light in water

R.d = λ₁/λ₂.................. Equation 1

making λ₂ the subject of equation 1

λ₂ = λ₁/R.d...................... Equation 2

R.d = refractive index of water , λ₁ = wave length of light in air, λ₂ = wave length of light in water

<em>Given: R.d = 1.33, λ₁ = 760nm</em>

<em>Substituting these values into equation 2</em>

λ₂  = 760/1.33

<em>λ₂  = 571.43 nm</em>

<em>Therefore the wavelength of water = 571.43 nm</em>

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Answer:

r₂ = 0.316 m

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let's write this expression for our case

           β₁ = 10 log \frac{I_1}{I_o}

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          β₂ - β₁ = 10 log \frac{I_2}{I_1}

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having the relationship between the intensities, we can use the definition of intensity which is the power per unit area

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           P = I A

the area is of a sphere

          A = 4π r²

           

the power of the sound does not change, so we can write it for the two points

          P =  I₁ A₁ =  I₂ A₂

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we substitute the ratio of intensities

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we calculate

          r₂ = \frac{10.0}{\sqrt{10^3} }

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A hurricane<span> is a storm that occurs in the </span>Atlantic Ocean <span>and northeastern Pacific </span>Ocean<span>, a typhoon occurs in the northwestern Pacific </span>Ocean<span>, and a cyclone occurs in the south Pacific or Indian </span>Ocean<span>. Tropical cyclones can be categorized by intensity.</span>

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