Unit: Waves
Year: 1994 Question#: 45
Question: Parellel light rays are incident on the surface of a plane mirror. Upon reflection from the mirror, the light rays will.....
(1 ) converge
(2 ) diverge
(3 ) be parallel
(4 ) be scattered
What is this question really asking?
Explanation by: Tiffany L (no last names)
[ Return to question menu ]
Answer 1
Converge
INCORRECT
If the image were to converge, then the mirror used would have been a concave mirror, not a plane mirror. return to top
Answer 2
Diverge
INCORRECT
The mirror used here would have been a convex mirror, and not a plane mirror. return to top
Answer 3
Be parallel
CORRECT
Since they have the same angle of incident, they are parallel. Therefore the reflected rays will have the same angle of reflection.
(The plane mirror is the line on the bottom)
return to top Answer 4
be scattered
INCORRECT
A plane mirror would not be used if the light rays were scattered. return to top
What's this question really asking?
Where would the light rays go upon reflection off a plane mirror??? return to top
