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Alinara [238K]
2 years ago
8

What are shadows? A: Human dopplegangers B: Absence of light

Physics
2 answers:
nata0808 [166]2 years ago
8 0
B is the correct answer.
Gnoma [55]2 years ago
3 0
Shadows are B. Absence of light. Hope that helps.
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A ray of light incident in air strikes a rectangular glass block of refractive index 1.5 at angle of incidence of 45.
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Refraction is said to occur when there is a change in the speed of light.

<h3>What is the angle of refraction?</h3>

We know that refraction is said to occur when there is a change in the speed of light as it travels form one medium to another.

Given that the refractive index of the rectangular glass block is  1.5. The angle of refraction can be obtained by the use of the Snell's law;

n = sin i /sinr

n = refractive index

sini = angle of incidence

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b) Now;

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For the glass

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sin r = 0.392

r = 23 degrees

Learn more about angle of refraction:brainly.com/question/2660868

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