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Ch 6 Reflection of Light 2023.pdfLaws of reflection:
Incident ray, the reflected ray, and the normal lie on the same plane
Angle of incidence is equal to angle of reflection
Terms:
Incident ray:
Ray going towards the surface
Reflected ray:
Ray going away from surface
Normal:
Perpendicular line to the surface at the point of incidence
Point O (Point of incidence):
Point where incident ray strikes the surface
Angle i (Angle of Incidence):
Angle between incident ray and normal
Angle r (Angle of reflection):
Angle between reflected ray and normal
Drawing reflected rays on concaved surfaces:
Construct a tangent that touches the curve at point O
Two types of reflection:
Specular reflection (Smooth surface)
Diffuse reflection (Rough surface)
Characteristics of virtual image:
Virtual images are formed when:
Light rays reflect off object --> Strike mirror --> Travel into eyes
Characteristics:
Same size as object
Equal distance from mirror as object
Same orientation as object
Laterally inverted
Virtual (Not real)
Thus cannot be displayed on a screen because no actual light rays meet at the image position
Image is always laterally inverted
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