A light ray strikes a plane mirror at an angle of incidence of 30 degrees. What
Practice Questions
Q1
A light ray strikes a plane mirror at an angle of incidence of 30 degrees. What is the angle of reflection? (2021)
30 degrees
60 degrees
90 degrees
45 degrees
Questions & Step-by-Step Solutions
A light ray strikes a plane mirror at an angle of incidence of 30 degrees. What is the angle of reflection? (2021)
Step 1: Understand the problem. A light ray hits a mirror at a certain angle, called the angle of incidence.
Step 2: Identify the angle of incidence given in the question, which is 30 degrees.
Step 3: Recall the law of reflection, which states that the angle of reflection is equal to the angle of incidence.
Step 4: Apply the law of reflection to find the angle of reflection. Since the angle of incidence is 30 degrees, the angle of reflection is also 30 degrees.
Law of Reflection – The principle stating that the angle of reflection is equal to the angle of incidence when a light ray strikes a reflective surface.
