1. torne lplease prit!?... 0451) ill Multiple Choice 12 pts/problem) st A virtual image is one: ? cenai,
pont in tine and space, the "he neid o, a, eletromagnest wave pants west, an.., o Toward which
light rage converge but do not magnetic field soints up. Whith d pass theough From which light
rays diverge as they through electromagsetx wave traveting aFrom which lighe rays diverge as
thy pass o test OFrom which ight rays diverge but do not pass o South through o Toward which
lght rays converge and pass through 2) The image in a plane mirror appears The figure below
shows ray of light as i travel o In front of the mirror at the focal point Behind the mirror at a
distance equal to the through three differes materials Rank the materials from greatest to smaliest
according to ther index of refraction image distance o Behind the mirroe at the focal point o
behind the mirror at a distance equal to the radius of curvature 3) The displacement of a strning
is given by the equation yxt- y-sinkx-it). The wavelongth of the wave is given by o 2xkfo The
speed of a sinusoidal wave on a string depends Which one of these scenanios will produce an
inverted image of a glven object? The frequency of the wave o The Wavelength of the wave 4)
Diverging mirror, object distance o ?The tension in the string greater than radius of curvature
greater than radius of curvature than focal length than focall length The leneth of the string e
Converging mirror, object distance o Diverging mirror, object distance less o Converging mirow,
object distance less o o A Plane mirror
Solution
1) (c) from which light rays diverge but do not pass through.
2) (b) behind the mirror at a distance equal to the image distance.
3) (d) 2pi/k
4) correct
5) (d) down
6) (c) c>a>b
Remember: Rarer to denser-> towards the normal; denser to rarer-> away from the normal
7) (c) tension