A light ray strikes a plane mirror at an angle of 30 degrees to the normal. What
Practice Questions
Q1
A light ray strikes a plane mirror at an angle of 30 degrees to the normal. What is the angle of reflection? (2023)
30 degrees
60 degrees
90 degrees
45 degrees
Questions & Step-by-Step Solutions
A light ray strikes a plane mirror at an angle of 30 degrees to the normal. What is the angle of reflection? (2023)
Step 1: Identify the angle at which the light ray strikes the mirror. This is called the angle of incidence.
Step 2: In this case, the angle of incidence is given as 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: Since the angle of incidence is 30 degrees, the angle of reflection will also be 30 degrees.
Law of Reflection – The principle stating that the angle of incidence is equal to the angle of reflection when a light ray strikes a reflective surface.
