“Suppose a horizontal laser beam is reflected off a plane mirror that is perfectly smooth and flat. At first, the mirror is angled upward at 4 degrees, measured from the vertical. Then, the angle of the mirror is changed to 6 degrees upward. How would the angle formed by the incoming laser beam and the reflected laser beam change
Question
Answer:
The angle in between changed from 8 to 12 degrees
Explanation:
Solution:-
Angle between the incoming and reflected beam is always twice that of the inclination of the mirror.
Initially, Inclination angle θ = 4 degrees
Angle between incident and reflected beam is twice of the inclination of mirror. Hence,
Φ = 2*θ = 2*4 = 8 degrees.
Change, Inclination angle θ = 6 degrees
Angle between incident and reflected beam is twice of the inclination of mirror. Hence,
Φ = 2*θ = 2*6 = 12 degrees.
– The angle formed by the incoming laser beam and the reflected laser beam will change from 8 degrees to 12 degrees.