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    1. Total internal reflection occurs when a light wave:

    a. hits a surface at an angle greater than the critical angle

    b. hits a surface at an angle less than the critical angle

    c. hits a surface at an angle equal to the critical angle

    d. is reflected off a surface at any angle

    2. The critical angle for total internal reflection is determined by:

    a. the wavelength of the light

    b. the index of refraction of the material

    c. the angle of incidence

    d. the distance the light travels through the material

    3. When a light wave is incident on a denser medium at an angle greater than the critical angle, what happens?

    a. The light wave is totally reflected

    b. The light wave is totally transmitted

    c. The light wave is partially reflected and partially transmitted

    d. The light wave is absorbed by the material

    4. The phenomenon of total internal reflection is used in:

    a. fiber optics

    b. mirrors

    c. magnifying glasses

    d. all of the above

    5. When a light wave is incident on a rarer medium at an angle greater than the critical angle, what happens?

    a. The light wave is totally reflected

    b. The light wave is totally transmitted

    c. The light wave is partially reflected and partially transmitted

    d. The light wave is absorbed by the material

    6. The critical angle is defined as the angle of incidence at which:

    a. the reflected light is polarized

    b. the transmitted light is polarized

    c. the angle of refraction is 90 degrees

    d. the angle of incidence is equal to the angle of refraction

    7. The critical angle is dependent on:

    a. the wavelength of the light

    b. the index of refraction of the material

    c. the angle of incidence

    d. all of the above

    8. When a light wave is incident on a denser medium at an angle less than the critical angle, what happens?

    a. The light wave is totally reflected

    b. The light wave is totally transmitted

    c. The light wave is partially reflected and partially transmitted

    d. The light wave is absorbed by the material

    9. The critical angle is greater for:

    a. a denser medium

    b. a rarer medium

    c. both a and b

    d. neither a nor b

    10. The critical angle can be calculated using the formula:

    a. n1sin(theta1) = n2sin(theta2)

    b. n1cos(theta1) = n2cos(theta2)

    c. n1tan(theta1) = n2tan(theta2)

    d. sin-1(n2/n1)

Answers:

1.     a
2.     b
3.     a
4.     d
5.     a
6.     c
7.     d
8.     c
9.     a
10.     d