snell's law

posted by .

An equilateral prism of silica flint glassis used to refract white light. The indexof refraction of silica flint is 1.66 forviolet light and 1.62 for red light.
What is the angle of separation between
the violet and red ends of the rainbow
produced when the ray of white light is
incident at an angle of 50.0° with
respect to the normal?

  • snell's law -

    From what i understand in this question, white light goes from air through the prism which splits it into red and violet. the question is asking about the angle between red and violet when it comes out in the air from the prism.
    i used snells law to find the angle of refraction in the prism first.

    going from air to prism
    red => 1sin50 = 1.62 sin (theta)
    theta (red) = 28.22

    violet => 1 sin50 = 1.66 sin (theta)
    theta (violet) = 27.48

    i tried to use these angles to find the refraction angles from prism to air which gives me 50 again and sounds wrong.
    not sure how to go about this problem.
    please help.

    thankyou

  • snell's law -

    There are are two refractions, you will have to draw a diagram and figure the effect of each refraction.

    http://www.physicsclassroom.com/Class/refrn/u14l4a.cfm

  • snell's law -

    PRIMARY RAINBOW: Combine φ=4r−2i with Snell's Law to express the angle φ as a function of i and n only.
    (a) Evaluate φ(i,n) for the following values (give your answers in degrees):
    a.1) i=3∘, n=1.35
    a.2) i=46∘, n=1.3

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A ray of light of frequency 5.09 x 10^14 Hz passes from air into flint glass (n=1.6). a.) If the ray enters the flint glass at an angle of 30*, what is the angle of refraction?
  2. physics

    A very narrow beam of white light is incident at 40.40° onto the top surface of a rectangular block of flint glass 11.8 cm thick. The indices of refraction of the glass for red and violet light are 1.637 and 1.671, respectively. Calculate …
  3. Physics

    very narrow beam of white light is incident at 40.40° onto the top surface of a rectangular block of flint glass 11.8 cm thick. The indices of refraction of the glass for red and violet light are 1.637 and 1.671, respectively. Calculate …
  4. Physics help

    A very narrow beam of white light is incident at 40.40° onto the top surface of a rectangular block of flint glass 11.8 cm thick. The indices of refraction of the glass for red and violet light are 1.637 and 1.671, respectively. Calculate …
  5. Physics

    A index of certain type of glass has an an index of refraction of 1.66 for red light and 1.65 for violet light. If a beam of white in air approaches the glass with an angle of incidence of 49.0 degree, by what angle will the red light …
  6. physics

    Horizontal rays of red light (λ = 660 nm, in vacuum) and violet light (λ = 410 nm, in vacuum) are incident on the flint-glass prism shown in the drawing. The indices of refraction for the red and violet light are nred = 1.662 …
  7. Physics - General Physics

    Violet light and red light travel through air and strike a block of plastic at the same angle of incidence. The angle of refraction is 30.700° for the violet light and 31.380° for the red light. The index of refraction for violet …
  8. Physics

    A)A very narrow beam of white light is incident at 42.20° onto the top surface of a rectangular block of flint glass 12.6 cm thick. The indices of refraction of the glass for red and violet light are 1.647 and 1.672, respectively. …
  9. science

    A combination of two prism one of flint &other of crown glass produces dispersion without deviation.The angle of the flint glass prism is 15degree . Calculate the angle of crown glass prism & the dispersion separation of red & violet …
  10. Physics

    A very narrow beam of white light is incident at 56.10° onto the top surface of a rectangular block of flint glass 12.7 cm thick. The indices of refraction of the glass for red and violet light are 1.640 and 1.663, respectively. Calculate …

More Similar Questions