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A ray of light strikes a plane mirror at an angle of incidence of 30 degrees. Wh

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Question: A ray of light strikes a plane mirror at an angle of incidence of 30 degrees. What is the angle of reflection?

Options:

  1. 30 degrees
  2. 45 degrees
  3. 60 degrees
  4. 90 degrees

Correct Answer: 30 degrees

Solution: 

According to the law of reflection, the angle of reflection is equal to the angle of incidence. Therefore, the angle of reflection is 30 degrees.

A ray of light strikes a plane mirror at an angle of incidence of 30 degrees. Wh

Practice Questions

Q1
A ray of light strikes a plane mirror at an angle of incidence of 30 degrees. What is the angle of reflection?
  1. 30 degrees
  2. 45 degrees
  3. 60 degrees
  4. 90 degrees

Questions & Step-by-Step Solutions

A ray of light strikes a plane mirror at an angle of incidence of 30 degrees. What is the angle of reflection?
Correct Answer: 30 degrees
  • Step 1: Understand that a ray of light is hitting a mirror.
  • Step 2: Identify the angle at which the light hits the mirror, which is called the angle of incidence. In this case, it is 30 degrees.
  • Step 3: Remember the law of reflection, which states that the angle of reflection is always equal to the angle of incidence.
  • Step 4: Since the angle of incidence is 30 degrees, the angle of reflection must also be 30 degrees.
  • Law of Reflection – The angle of incidence is equal to the angle of reflection when light strikes a reflective surface.
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