Physics

posted by Andrea

Find the speed of light in flint glass if the index of refraction is n=1.66. How much slower in percent of speed of light in a vacuum c does the light move in each of this medium?

v=c/n
v=3x10^8m/s/1.66
=1.8x10^8m/s

For the percent of speed of light in a vacuum c. Would it be: 3x10^8-1.8x10^8/3x10^8 *100 = 40%

Is this correct? I'm not to sure about the percent part though.

  1. bobpursley

    right on v.

    Percent= (speedlight-newspeed)/speedlight * 100

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Physics

    When light travels from air to glass, which one of the following is not dependent on the index of refraction of the glass?
  2. 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?
  3. science

    The speed of light in a prticular ype of glass is 1.68x10^8 m/s. What is the index of refraction of the glass?
  4. waves and optics

    Cherenkov radiation is light emitted by a particle moving through a medium with a speed greater than the speed of light in the medium. (Note: The speed of the particle is not greater than the speed of light in a vacuum.) Consider a …
  5. physics....

    Cherenkov radiation is light emitted by a particle moving through a medium with a speed greater than the speed of light in the medium. (Note: The speed of the particle is not greater than the speed of light in a vacuum.) Consider a …
  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

    Two light rays, one red and one violet, encounter a glass surface. If the index of refraction of the red light ray = 1.52, the index of refraction of the violet light ray = 1.54, and the angle of incidence = 30 degrees, calculate the …
  8. Science/Physics

    The speed of light in a certain medium is 61.2% of the speed of light in vacuum. What is the index of refraction of the medium?
  9. physics

    The index of refraction of water for a given monochromatic light in water is n=4/3. The wavelength of this light in water is 500nm. a) find the speed of this light in water. b) find the energy of one photon of this light . Does this …
  10. physics

    The index of refraction of water for a given monochromatic light in water is n=4/3. The wavelength of this light in water is 500nm.  a) find the speed of this light in water.  b) find the energy of one photon of this light . Does …

More Similar Questions