Light Reflection: Understanding Incident and Reflected Rays
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Questions and Answers

What is the primary reason why we can see an object reflected in a mirror?

  • The law of reflection is obeyed (correct)
  • The angle of incidence is always greater than the angle of reflection
  • The incident ray is always perpendicular to the reflected ray
  • The normal line is parallel to the reflector

    • What is the purpose of the normal line in reflection?

  • To draw a perpendicular to the reflector (correct)
  • To indicate the direction of the incident ray
  • To measure the angle of reflection
  • To measure the angle of incidence

    • What is the main difference between how smooth and rough surfaces reflect light?

  • Rough surfaces reflect more rays of light than smooth surfaces
  • Smooth surfaces reflect all rays of light at the same angle, while rough surfaces reflect them at different angles (correct)
  • Smooth surfaces reflect more rays of light than rough surfaces
  • Rough surfaces reflect all rays of light at the same angle, while smooth surfaces scatter them

    • What is the primary function of a periscope?

    <p>To see over or around something</p> Signup and view all the answers

    What is the purpose of the mirrors in a simple periscope?

    <p>To reflect the light from the object to the observer's eyes</p> Signup and view all the answers

    What was the primary use of periscopes in the First World War?

    <p>To see over the top of trenches</p> Signup and view all the answers

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