LIGHT ©2008 e-learning @Science-tutors
LIGHT (CHECKING PROGRESS/REVISION LESSONS)
Dec 21, 2014
A range of tasks to check students progress. Note this slide is a continuation of the first one. Students and users are adviced to go over the slide titled LIGHT SPECTRUM AND DISPERSION before using this checking progress slide.
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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?
LIGHT E-learning @Science-tutors
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
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