The wave-particle duality of light means that, in the same experiment:
a. light will act both like a wave and like a particle.
b. light will act either like a wave or like a particle.
c. light will not act like either a wave or a particle.
d. light always exists as two waves or as two particles.
[Ques. 2] According to present theories of light, in some experiments light seems to be:
a. composed of particles which can neither be created nor destroyed.
b. a particle whose quantized energy depends on its velocity.
c. a wave that moves from one place to another if there is material to vibrate.
d. none of the above.
[Ques. 3] Photon A has an energy of 3.3 1019 J. Photon B has 4 times the frequency of Photon A. What is the energy of Photon B?
a. 8.3E20 J
b. 1.7E19 J
c. 1.3E18 J
d. 6.6E19 J
e. 5.3E18 J
[Ques. 4] A thin lens has a focal length of 10.00 cm for red light. If the index of refraction for the lens material tends to decrease with increasing wavelength, what is the focal length of the lens for blue light?
a. also 10.00 cm
b. less that 10.00 cm
c. more than 10.00 cm
d. It depends on whether the lens is converging or diverging.
[Ques. 5] Use of a parabolic mirror, instead of one made of a circular arc surface, can be used to reduce the occurrence of which of the following effects?
a. spherical aberration
b. mirages
c. chromatic aberration
d. light scattering
[Ques. 6] Reducing the lens aperture size is a scheme one can use to reduce the occurrence of which of the following effects?
a. spherical aberration
b. mirages
c. chromatic aberration
d. light scattering
[Ques. 7] A fused combination of a diverging and converging lens pair each made from a different index of refraction glass, is used to reduce the occurrence of which of the following effects?
a. spherical aberration
b. mirages
c. chromatic aberration
d. light scattering
[Ques. 8] In an ideal case rays coming from an object toward a lens or mirror should be reasonably close to the optic axis. To the extent that this condition is not completely met, which one of the following effects occurs?
a. spherical aberration
b. mirages
c. chromatic aberration
d. light scattering
[Ques. 9] Which of the following effects is the result of the fact that the index of refraction of glass will vary with wavelength?
a. spherical aberration
b. mirages
c. chromatic aberration
d. light scattering
[Ques. 10] When light goes through two or more separated lenses,
a. the image distance of the first lens (the one nearest the object) will be positive.
b. the final image can be inverted.
c. the image distance of the first lens will be the object distance for the second lens.
d. the object distance for the second lens will be negative.
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