LIGHT (CHECKING PROGRESS/REVISION LESSONS)

LIGHT

©2008 e-learning @Science-tutors

LIGHT ©2008 e-learning @Science-tutors

LIGHT ©2008 e-learning @Science-tutors

The relationship of the angle between the mirrors (A) to the number of images (N) is expressed as A(N+1) = 360. N+1 = 360º ÷A N = 360º -1 ÷ A Where N is the number of images formed between two mirrors inclined at any angle.

LIGHT E-learning @Science-tutors

Draw three ray diagrams for angles 10º , 20º and 30º to show the following

incident ray, the normal and reflected ray in a plane mirror

LIGHT E-learning @Science-tutors

TASK Describe the nature of the image formed in a plane mirror. How is the image different from the object?

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YOUR TASK

Predict the number of images formed of an object placed between two plane mirrors set at the following angles:

60º 90º 160º

LIGHT

©2008 e-learning @Science-tutors

The following data were collected in a science lesson-using a ray box and a slit to investigate reflections at plane surfaces (mirrors). Using the table shown below, represent the data as a line graph and draw a line of best fit.

Incidence Angle Angle of reflection

10 10

20 20

30 30

40 40

50 50

60 60

LIGHT E-learning @Science-tutors

TASK Apply your knowledge and understanding of reflection to everyday situations

OR State the uses of reflection to everyday situations.

LIGHT E-learning @Science-tutors