light-reflection-and-mirrors
Light: Mirrors and Lenses
Page 1
Introduction to the properties and behavior of light with mirrors and lenses.
Page 2
Regular Reflection
Regular reflection: The __________reflection of light on a(n) __________surface.
A. even, smooth
C. semi-smooth, rough
B. even or uneven, rough
D. uneven, rough
Plane mirror image direction: In multiple directions.
A. five
C. the opposite
B. multiple directions
D. the same
Page 3
Plane Mirror Characteristics
Plane mirror has a/an ____________reflecting surface.
A. angled
B. concave
C. convex
D. flat
Diffuse reflection: ___________reflection of light rays on a _____________surface.
A. even, smooth
B. even or uneven, semi rough
C. semi-smooth, rough
D. uneven, rough
Scattering of light occurs when light waves traveling in ___________ direction(s) change to ____________ direction(s).
A. one, many
B. many, one
C. one, ten
D. several, one
Page 4
Reflection Types
For Regular/Diffuse Reflection, the _____________ of the object will determine the SHARPNESS of reflection.
A. angle
B. surface
C. color
D. a and b
Law of Reflection: Angle of incidence is ____________ to the angle of reflection.
A. equal
B. greater than
C. less than
D. both a and b
Page 5
Image Formation
Concave mirror may form an image which is ______________.
A. real, erect and magnified
B. real, inverted and diminished
C. real, inverted and magnified
D. real, inverted and same size
Convex mirror image is always _______________________.
A. real, erect and diminished
B. virtual, erect and diminished
C. real, erect and magnified
D. virtual, inverted and diminished
Page 6
Properties of Plane Mirror
Image in a plane mirror is _______________________.
A. same distance in front
B. shorter distance in front
C. same distance behind
D. shorter distance behind
Typical mirror in homes is a ____________ mirror.
A. concave
B. convex
C. parabolic
D. plane
Page 7
Lens Types
Lens producing smaller and upright images is:
A. concave lens
B. convex lens
C. converging lens
D. cannot be determined
Lens thicker at the center compared to edges:
A. concave
B. convex
C. parabolic
D. plane
The size of the image is always smaller than the object in ____________________ .
A. concave mirror
B. convex mirror
C. plane mirror
D. silver mirror
Lens used to correct nearsightedness:
A. concave
B. convex
C. parabolic
D. plane
Page 8
Answers
A 6. C 11. D
C 7. A 12. A
D 8. A 13. B
D 9. A 14. B
A 10. C 15. A
Page 9
Lesson Objectives
Predict qualitative characteristics of images formed by plane mirrors, including location, orientation, type, and magnification.
Page 10
Behavior of Light
Light behaves in various ways when striking different matters (water, air):
Some get absorbed as heat.
Transparent materials transmit light.
Smooth surfaces reflect light, while irregular surfaces scatter light.
Page 11
Images Formed by Plane Mirrors
Plane mirrors produce virtual images:
Characteristics: Size same as the object, orientation same, distance same from the mirror.
Page 12
Speed of Light
Speed of light, c, is constant in a vacuum.
Light can be reflected, absorbed, refracted.
Light is an electromagnetic wave affected by electric and magnetic fields.
Page 13
Comparison of Reflections
Specular (Regular) Reflection: Occurs on smooth surfaces (e.g., mirrors).
Diffused (Irregular) Reflection: Occurs on rough surfaces (e.g., paper).
Page 14
Reflection Characteristics
Characteristics of images in plane mirrors:
Image is virtual
Same size as the object
Same orientation
Same distance from the mirror
Page 15
Ray Diagrams
Demonstrating image formation using ray diagrams for concave and convex mirrors.
Page 16
Mirror Equation
The mirror/lens equation helps predict image characteristics using object distance and focal length values.
Page 17
Magnification Equation
Magnification indicates image orientation and size.
Positive: Upright; Negative: Inverted.
Greater than 1: Enlarged; Less than 1: Reduced; Equal to 1: Same size.
Page 18
Practical Application
Provide examples to illustrate the characteristics of images formed by concave and convex mirrors.