Two Plane Mirrors Are Joined at a Right Angle $^{\circ}$ B) 68

question 40

Multiple Choice

Two plane mirrors are joined at a right angle.A beam of light is shone on one of the mirrors at an angle of incidence of 22 degrees,such that the reflected ray strikes the other mirror.What is the angle of incidence for the beam that strikes the second mirror?

• A) 23\(^{\circ}\)
• B) 68\(^{\circ}\)
• C) 43\(^{\circ}\)
• D) 22\(^{\circ}\)

---

Definitions:

Positive Reinforcement

The presentation of a stimulus following a given behavior in order to increase the frequency of that behavior.

Operant Conditioning

A learning process through which the strength of a behavior is modified by reinforcement or punishment, a principle established by B.F. Skinner.

Behavior

The actions or reactions of an individual, usually in relation to the environment or stimuli; how one conducts oneself.

Radio Channel

A specific frequency or band of frequencies allocated for transmitting and receiving radio waves.