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Deffense [45]
2 years ago
12

Which describes refraction? *

Physics
1 answer:
sergey [27]2 years ago
5 0

Answer:

Refracted rays travel through a boundary into a new medium.

Explanation:

Refracted rays travel through a boundary into a new medium. is only true for refraction.

The angle of incidence is the same for angle of refraction, is not true for refraction. Refraction follows Snell's law, states that ratio of the sine of the angle of refraction and the sine of the angle of incidence is always constant and equivalent to the ratio of phase velocities of the two mediums it is passing through.

Refracted rays change direction and go back to the original medium is false for refraction however, it is true for reflection.

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Parallel rays of monochromatic light with wavelength 571nm illuminate two identical slits and produce an interference pattern on
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Answer:

8.8\times 10^{-6} W/m^2

Explanation:

We are given that

Wavelength,\lambda=571 nm=571\times 10^{-9} m

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tan\theta=\frac{y}{R}

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Because \theta is small.

\phi=\frac{2\pi dsin\theta}{\lambda}

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Therefore

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\beta=\frac{2\pi a\theta}{\lambda}

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I=I_0cos^2(\frac{\phi}{2})(\frac{sin\frac{\beta}{2}}{\frac{\beta}{2}})^2

I=5\times 10^{-4}cos^2(\frac{7.74}{2})(\frac{sin\frac{5.3}{2}}{\frac{5.3}{2}})^2

I=8.8\times 10^{-6} W/m^2

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