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HONOR PHYSICS STUDY GUIDE – CHAPTER 24 – THE WAVE NATURE OF LIGHT

1.A ray of light, which is traveling in a vacuum, is incident on a glass plate (n = ng).  For decreasing angles of incidence, the angle of refraction

a)increases, approaching the limiting value of 90.

b)decreases, approaching the limiting value of sin-1 (l/ng) degrees.

c)decreases, approaching the limiting value of sin-1(ng) degrees.

d)decreases, approaching the limiting value of zero degrees.

2.The wave theory of light is attributed to

a)Christian Huygens.    b) Isaac Newton.           c)Max Planck.   d)  Albert Einstein.

3.The particle theory of light is attributed to

a)Christian Huygens.    b) Isaac Newton.           c)Max Planck.   d)  Albert Einstein.

4.What principle is responsible for light spreading as it passes through a narrow slit?

   a)    refraction    b) polarization     c) diffraction    d) interference

5.What principle is responsible for alternating light and dark bands when light passes through two or more narrow slits?

a)refraction    b) polarization      c) diffraction    d) interference

6.What principle is responsible for the fact that certain sunglasses can reduce glare from reflected surfaces?

a)refraction    b) polarization      c)diffraction     d) total internal reflection

7.The principle on which fiber optics is based is

a)refraction      b) polarization   c)  dispersion    d) total internal reflection

8.The principle which allows a rainbow to form is

a)refraction      b) polarization   c)  dispersion    d) total internal reflection

9.The principle which explains why a prism separates white light into different colors is

a)refraction      b) polarization   c)  dispersion    d) total internal reflection

10.Objects under water appear closer than they are because of refraction.

11.Fiber optics work on the principle of dispersion.

12.

Light has wavelength 600 mm in a vacuum.  It passes into glass, which has an index of refraction of 1.50.                 What is the frequency of the light inside the glass?

        a)    4.00x 10__9 Hz        b)    5x1014 Hz       c)    4x10__4 Hz      2.5x103 Hz

13.  Light has a wavelength of 600 nm in a vacuum.  It passes into glass, which has an index of refraction of 1.50.  What is the speed of the light in the glass?

                        a)    1x108 m/s      b)    2.5x108 m/s      c)    2x108 m/s      3x108 m/s

14. 400 nm of light falls on a single slit of width 0.1 mm.  What is the angular width of the central diffraction peak?

 a)    0.46      b)    0.23      c)    0.34      d)    0.68

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