russiangirl9802
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If the speed of light in a vacuum is 1.2 times that of the speed of light in a
given material, what is the index of refraction for that material?
Write your answer as a decimal.

Respuesta :

bhuvna789456

Refractive Index for the material is 1.2

Explanation:

  • Formula for Refractive index of the material (n) = speed of light in vacuum/speed of light in the material
  • Given detail is speed of light in vacuum = 1.2 (speed of light in the material)

⇒ Speed of light in vacuum/Speed of light in the material

   = 1.2 = n

  • The refractive index and the index of refraction are same. It describes how light travels through a substance.

zunairaabeer

Answer:

Explanation:

Refractive index if denoted by n is different for different materials.

Let, the speed of light in vacuum = v₁= 3x10⁸m/s

refractive index of vacuum= n₁= 1

refractive index of second medium= n₂= 1.2

now according to Snell's law

n₁ / n₂ = v₂ / v₁

thus the speed of light in second medium with refractive index 1.2 will be

v₂ = v₁ (n₁ / n₂)= 3x 10⁸m/s(1/1.2)= 2.5x10⁸ m/s

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