Physics

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. 👍 0
  2. 👎 0
  3. 👁 69
asked by Andrea
  1. right on v.

    Percent= (speedlight-newspeed)/speedlight * 100

Respond to this Question

First Name

Your Response

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? b.) What is the critical angle for a ray of light

    asked by Nathaniel on June 12, 2006
  2. Physics

    One application of the index of refraction is analysis of crime scenes. Using the index of refraction, forensic scientists can determine what type of glass has been left at a scene. Read the following and answer the questions

    asked by Suzy on November 24, 2008
  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? I don't understand if how to solve this problem. Do you put an index of refraction of glass that you know or are you

    asked by Zuri on November 27, 2006
  4. 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

    asked by Kid on October 30, 2015
  5. Physics

    When light travels from air to glass, which one of the following is not dependent on the index of refraction of the glass? A- The speed at which lught travels in the glass B- The angle through which light is deflected on entering

    asked by David on June 12, 2006
  6. physics

    7. A drop of oil is placed on a glass block. The glass has an index of refraction of 1.55. When light shines from the glass into the droplet, total internal reflection occurs at a critical angle of 59.0(degrees).find the index of

    asked by alessandra on December 5, 2012
  7. 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 &

    asked by apurv on August 24, 2015
  8. Physics

    The incident ray comes at 30 degrees to normal at the air/glass boundary and is refracted at 18 degrees to normal. a) find index of refraction of glass b)find speed of light in glass c) under what conditions and for what angles

    asked by Andrea on April 16, 2008
  9. physics

    Someone on a glass-bottom boat shines a light through the glass into the water below. A scuba diver beneath that boat sees the light at an angle of 17 degrees with resoect to the normal. If the glass's index of refraction is 1.5

    asked by Taylor on April 22, 2013
  10. PHYSICS

    A certain kind of glass with index of refraction of 1.65 for blue light of wavelength 430nm and index of refraction 1.615 for red light with wavelength 680nm. If a beam of light containing these two colors has incident angle of 30

    asked by nat on March 27, 2008

More Similar Questions