) Consider a beam of light traveling from a medium with a low index of refraction n1 to a new medium with a higher index of refraction n2. U

Question

) Consider a beam of light traveling from a medium with a low index of refraction n1 to a new medium with a higher index of refraction n2. Use Snell’s Law to explain why total internal reflection will never occur in this situation, regardless of the choice of the incident angle.

in progress 0
Đan Thu 5 years 2021-09-05T12:24:30+00:00 1 Answers 12 views 0

Answers ( )

  1. niczorrrr
    0
    2021-09-05T12:26:29+00:00
    Reply

    Answer:

    Snell’s law says that

    n1*sin(a1) = n2*sin(a2)

    n1 < n2

    son n2/n1 > 1

    then:

    sin(a1) = (n2/n1)sin(a2)

    the maximum possible value of sin(x) is 1 when x =90°

    total internal reflection means that a2= 90°

    but as the coefficient that is multiplying sin(a2) is bigger than 1, we can not have a2 = 90°, because the right side will be greater than 1 and the left side can not be bigger than 1, so we can not have a2 = 90°, so we can not have total internal reflection

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )