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8 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Definition of angle of incidence |
Angle between incident ray and normal |
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Definition of angle of reflection |
Angle between reflected ray and normal |
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Definition of normal |
A line that is perpendicular to a surfave |
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Laws of reflection |
1. Angle of incidence is equal to angle of reflection 2. The incident ray, reflected ray and normal lie on the same plane. |
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Characteristics of a plane mirror image. |
1.Laterally inverted 2. Same size as object 3. Upright 4. Virtual(cannot be captured on the screen) 5. Distance from the mirror is equal to the distance of the object from the mirror |
SUV DL |
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1. An object O, is placed 2m in front of a mirror. A light ray from the object is incident on the mirror at an angle of 30° from the normal. When the mirror is rotated clockwise 20°, what is the change in the angle of reflection? |
Angle of reflected ray = (50+50)°-(30+30)° =100°-60° =40° |
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How to draw the object and image from the periscope. |
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The mirror is turned 15° in the clockwise direction, while the incident ray remains fixed. The new angle of reflection is equal to..? |
40°+15° =55° |
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