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Ray diagrams

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by

Richard Grice

on 24 August 2015

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Transcript of Ray diagrams

Ray Diagrams
Lenses
Converging
Diverging
Just my imagination?
Magnification
Parallel - ray drawn parallel to the axis and refracted through the focal point

Centre - ray passes through the centre without a change in direction

Focal point - ray passes through F on the object side of the lens, and then parallel to the axis
A Converging Lens:

makes parallel rays converge to a focus -
the pricniple focus or focal point
A Diverging Lens:

makes parallel rays diverge (spread out) -
the point from which they spread out is
the principle focus of the lens
Converging Lens
Diverging Lens
Parallel - ray drawn parallel to the axis and refracted away from the axis on a plane through the focal point

Centre - ray passes through the centre without a change in direction

Focal point - ray heads towards F on the opposite side of the lens, and then parallel to the axis
real, inverted, diminished
real, inverted, same size
real, inverted, magnified
virtual, upright, magnified
Images can be:
Real
Virtual
Magnified
Diminished
To do:

Ray diagram sheet
Summary Questions pg 241
Refraction Summary
Summary questions on pg 239
key points on pg 239
Full transcript