Physics

(c22p46) A light ray of wavelength 589 nm is incident at an angle θ on the top surface of a block of polystyrene surrounded by air.

PART 3: Find the maximum value of θ for which the refracted ray will undergo total internal reflection at the left vertical face of the block.

A. 47.84o
B. There is no entering angle that will lead to an angle large enough to internally reflect from the left side in air
C. 42.16o
D. 63.5o
E. 90o


PART 2: Repeat the calculation for the case in which the polystyrene block is immersed in water.

A. 63.5o
B. 41.67o
C. 48.33o
D. There is no entering angle that will lead to an angle large enough to internally reflect from the left side in water.
E. 90o


PART 3: What happens if the block is immersed in carbondisulfide?

a. 90o
b. 41.67o
c. 48.33o
d. 63.5o
e. There is no entering angle that will lead to an angle large enough to internally reflect from the left side in carbondisulfid

PLEASE HELP ME WITH THIS PROBLEM! NO-ONE FROM MY CLASS KNOWS HOW TO DO IT!
WHAT ARE THE ANSWERS FOR PART 1, 2, AND 3? THANK YOU!!!

  1. 👍 0
  2. 👎 0
  3. 👁 1,225
  1. First you have to look up the index of refraction for water, polystyrene and carbon disulfide. Apparently they have not provided you with those numbers.

    You can only get total internal reflection when a light ray tries to enter a medium with a lower index of refraction. That is not what happens in Part 1, so the answer to that one is B.

    For the others, get the refractive index, see if Total Internal Reflection is possible, and apply Snell's law if refraction is possible.

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A ray of light of vacuum wavelength 550 nm traveling in air enters a slab of transparent material. The incoming ray makes an angle of 34.3◦ with the normal, and the refracted ray makes an angle of 18.9◦ with the normal. Find

  2. Physics

    Rank in order the following according to their speeds, from fastest (1) to slowest (5): (i) 425-nm-wavelength light through a pane of glass, (ii) 500-nm-wavelength light through air, (iii) 540-nm-wavelength light through water,

  3. Physics

    Which of the following statements is not true about refraction? Refraction occurs when light's velocity changes. The angle between the refracted ray and the normal is called the angle of refraction. When light moves from a rarer

  4. physics

    Be sure to show all your work and explain the method of arriving at your answer. The diagram below shows three wavefronts moving to the right, approaching a solid barrier. a) We will focus on the wavefront closest to the barrier.

  1. physics

    A narrow ray of yellow light from glowing sodium (λ0 = 589 nm) traveling in air strikes a smooth surface of water at an angle of θi = 34.9°. Determine the angle of refraction θr.

  2. Physics

    A ray of light is incident at an angle of 30° on a glass prism of refractive index 1.5 . calculate the angle through which the ray is minimally deviated in the prism.(the medium surrounding the prism is air)

  3. Physics

    A light Ray is incident at an angle of 45 degrees on one side of a glass plate of index of refraction 1.6. Find the angle at which the ray emerges from the other side of the plate

  4. Physic please help!

    Two slabs with parallel faces are made from different types of glass. A ray of light travels through air and enters each slab at the same angle of incidence. Which slab has the greater index of refraction and why? slab A is a

  1. chem-help

    the bright yellow light emitted by a sodium vapor lamp consists of two emission lines at 589.0 and 589.6 nm. what are the frequency and the energy of a photon of light at each of these wavelengths? what are the enegies in kJ/mol

  2. Physics

    1. Yellow light of wavelength 5.5 x 10^-7 m is incident normally at a diffraction grating with 300 lines per mm. Calculate the angle between the first-order and second-order maxima. 2. Blue light of wavelength 4.5 x 10^-7 m is

  3. Physics

    The angle between an incident ray and the mirror is 30 degrees What is the angle of incidence? What is the angle of reflection? What is the total angle turned by the ray?

  4. Physics

    A narrow ray of yellow light from glowing sodium (λ0 = 589 nm) traveling in air strikes a smooth surface of water at an angle of θi = 40.5°. Determine the angle of refraction θr.

You can view more similar questions or ask a new question.