Physics Questions
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The light in raindrops making up a rainbow has undergone refraction and internal _______.a. dispersionb. absorptionc. scatteringd. reflection
Light refracts when traveling from air into glass because light a. travels slower in glass than in air.b. has greater frequency in air than in glass.c. has greater intensity in glass than in air.d. has greater intensity in air than in glass.e. has greater frequency in glass than in air.
Your image in a plane mirror isa. virtual b. real c. both of thesed. neither of these
Atmospheric refraction makes the daylight hours a bita. shorter b. longer in summer but shorter in winter c. longer
A person standing waist-deep in a swimming pool appears to have short legs because of lighta. interference b. absorptionc. refraction d. diffraction e. reflection
At night an underwater scuba diver aims his flashlight beam toward the surface at an angle of 15 degrees with the normal. Upon emerging, the beam angle will bea. 15 degrees.b. impossible to predict.c. more than 15 degrees.d. less than 15 degrees.
Light travels fastest ina. a vacuum.b. warm air.c. cool air.
a mirage is a result of atmospheric a. reflection b. dispersion c. scattering d. refraction e. aberrations
Fermat's principle of least time applies to a. refraction b. reflection c. both of thesed. neither of these
Refraction causes the bottom of a swimming pool to appeara. closer to the surface than it actually is b. farther down than it actually is c. neither
When a light beam emerges from water into air, the average light speeda. remains the sameb. increasesc. decreases
Different colors are dispersed by a prism because different colors in the prism have differenta. directions b. frequencies c. speedsd. energies e. none of these
Diffuse reflection occurs when the size of surface irregularities is a. large compared to the wavelength of the light usedb. small compared to the wavelength of the light usedc. microscopic
When light passes through an ordinary window pane, its angle of emergence is:a. always less than its angle of incidence.b. the same as its angle of incidence.c. always more than its angle of incidence.d. usually more than its angle of incidence.e. usually less than its angle of incidence.
It is difficult to see the roadway in front of you when you are driving on a rainy night mainly becausea. of added condensation on the inner surface of the windshield b. the film of water on your windshield provides an additional reflecting surfacec. light scatters from raindrops and cuts down the light to reach your eyes d. the film of water on the roadway makes the road less diffusee. none of these
The shortest plane mirror in which you can see your entire image isa. about 3/4 your heightb. equal to your height c. about 1/3 your height d. dependent on your distance from the mirror e. half your height
When your eye is submerged in water, is the bending of light rays from water to your eyes more, less or the the same as in air? a. moreb. less c. the same
The incident light ray, the reflected light ray, and the normal between thema. may or may not lie in the same placeb. lie in planes that are perpendicular to one another c. lie in the same plane
Identical rays of light in air are refracted upon entering transparent materials: A, water, where the speed of light is 0.75 c, B, ethyl alcohol light is 0.7 c, Crown glass speed 0.6 cRank the materials according to how much the light ray bends toward the normal from most to least
Object and image for a plane mirror liea. equal distances from the mirrorb. along the same plane.c. at right angles to each other.d. all of thesee. none of these