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Olegator [25]
3 years ago
5

Light enters air from water. The angle of refraction will be A. less than the angle of incidence. B. greater than or equal to th

e angle of incidence. C. less than or equal to the angle of incidence. D. equal to the angle of incidence. E. greater than the angle of incidence.

Physics
2 answers:
Rina8888 [55]3 years ago
4 0

Answer:

E. greater than the angle of incidence.

Explanation:

Snell's law states that:

n_i sin \theta_i = n_r sin \theta_r (1)

where

n_i, n_r are the refractive index of the first and second medium

\theta_i, \theta_r are the angle of incidence and refraction, respectively

For light moving from water to air, we have:

n_i = 1.33 (index of refraction of water)

n_r = 1.00 (index of refraction of air)

Substituting into (1) and re-arranging the equation, we get

\sin \theta_r = \frac{n_i}{n_r} sin \theta_i = 1.33 sin \theta_i

which means that

\theta_r > \theta_i

so, the correct answer is

E. greater than the angle of incidence.

Rom4ik [11]3 years ago
4 0

Light enters air from water. The angle of refraction will be

  • A. less than the angle of incidence.
  • B. greater than or equal to the angle of incidence.
  • C. less than or equal to the angle of incidence.
  • D. equal to the angle of incidence.
  • E. greater than the angle of incidence.
<h3>Further explanation </h3>

Refractive Index is the value that calculated from the speed of light ratio in a vacuum to in a second medium of greater density. The refractive index variable is symbolized by the letter n or n' in descriptive text and mathematical equations.

Light enters air from water, the angle of refraction will be greater than the angle of incidence.

When light passed from a less dense to a more dense substance for example passing from air into water, the light is refracted towards the normal. The normal is a line perpendicular (forming a 90 degree angle) to the boundary between the two substances.

Hope it helps!

<h3>Learn more</h3>
  1. Learn more about The angle of refraction brainly.com/question/2660868
  2. Learn more about the angle of incidence brainly.com/question/1562672
  3. Learn more about the law of reflection brainly.com/question/12617938

<h3>Answer details</h3>

Grade:  9

Subject:  physics

Chapter:  refraction

Keywords:  The angle of refraction, the angle of incidence

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