Two flat rectangular mirrors are set edge to edge and placed perpendicular to a flat nonreflecting surface. The edges of the two mirrors meet at a 30° angle. A light ray that enters parallel to mirror 2 reflects from mirror 1 and then from mirror 2 . The angle of reflection of that ray from mirror 2 is
a. 0°
b. 30°.
c. 60°.
d. 90°.
e. 120°.
b
You might also like to view...
On the surface of a sphere the shortest distance between two points is:
A) an arc on a great circle. B) a straight line. C) a circle. D) a triangle. E) a curvy line.
A ball is thrown straight up with a speed of 30 m/s, and you can neglect the presence of air. (a) How long does it take the ball to reach the maximum height? (b) What is the maximum height reached by the ball? (c) What is its speed after 4.2 s?
What will be an ideal response?
The Milky Way shows evidence that over its history it has merged with and "cannibalized" smaller galaxies.
Answer the following statement true (T) or false (F)
A particle is fired at a target nucleus in which a reaction that could occur has a negative Q value. Which of the following statements is true?
a. The kinetic energy of the bombarding particle can be any amount for the reaction to occur. b. The kinetic energy of the bombarding particle must be equal to the absolute value of the Q value for the reaction to occur. c. The kinetic energy of the bombarding particle was greater than the absolute value of the Q value if the reaction occurred. d. The Q value has nothing to do with whether or not the reaction can occur.