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How will you explain the statement 'we cannot see the objects in a dark room'?
Draw a figure showing the following.
- Incident Ray
- Normal
- Angle of incidence
- Angle of reflection
- Point of incidence
- Reflected ray
Explain the following term:
Angle of reflection. Draw diagram/diagrams to show them.
Differentiate between the reflection of light from a plane mirror and that from a plane sheet of paper.
Describe the principle of simple periscope through an outline ray diagram. Give one of its uses.
A boy is standing in front of a plane mirror at a distance of 3 m from it.
(i) What is the distance between the boy and his image?
(ii) If the boy moves 1 m backward, find the distance between the image and the boy.
State whether the following statement is true or false. If false, correct it.
If a ray of light incident on a plane mirror is such that it makes an angle of 30o with the mirror, then the angle of reflection is 60o.
Higher Order Thinking Skills.
When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?
