Physics

posted by .

1. For a particular piece of glass the refractive index for X- rays of wavelength 1.60 X 10^-6 less than unity. At what maximum angle, measured to the surface , must a beam of X-rays strike the glass to undergo total internal reflection?
2 An oil drop of thickness 2.5 x 10^-5cm is on the surface of water in a water tank of area 1square meter. White light which is incident normally is observed through a spectrometer. The spectrum is seen to contain one dark band whose center has a wavelength of 6.5 x 10^-5cm in the air. Find the refractive index of oil.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics - EM spectrum

    Here's the question: which part of the electromagnetic spectrum has a refractive index of 1.45 in glass?
  2. Physics

    A very narrow beam of white light is incident at 47.50° onto the top surface of a rectangular block of flint glass 13.6 cm thick. The indices of refraction of the glass for red and violet light are 1.649 and 1.678, respectively. 1. …
  3. Physics

    The refractive index of a medium changes with the wavelength of incident light. Typically, the shorter the wavelength the larger the refractive index. Fused quartz has a refractive index of 1.47 for indigo light of 400 nm in wavelength, …
  4. 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 …
  5. Physics

    The side of a fish tank is made up of a thick parallel sided piece of glass.The refractive index for glass is 1.52.A beam of light strikes the surface of the glass at an angle of 46 degrees with rspect to the normal.What direction …
  6. physics

    A beam of light makes an angle of 13.0° with the normal of a mirror made of 4.70-mm-thick glass silvered on the back. If the index of refraction of the glass is 1.30, how far is the point at which the beam leaves the glass surface …
  7. 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. …
  8. 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 …
  9. physics

    water and glass with refractive index of 1.5 are interfaced.if the incident ray are from the water makes an angle 60 degrees with the normal.find the direction of the reflected and refracted rays(given that refractive index of glass …
  10. Physics

    A thin light beam is shining onto a wall. You take a solid block of glass that is 3.0cm thick and place it between the wall and the beam. The refractive index of the glass is 1.5. The angle between the beam and the surface of the block …

More Similar Questions