Secondary Two Science Worksheet_light_17jan2015
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Transcript of Secondary Two Science Worksheet_light_17jan2015
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Name:_________________________________
Date:______________________
Ray Diagrams
Instructions: Complete the following ray diagrams with guidance from your tutor. Please use
a ruler when drawing ray diagrams.
Note: 2F and F represents the focal points. The distance between F and the conerging lens is
!nown as the focal length.
"# $hen ob%ect is placed to the left of the point labelled 2F& a real& inerted and smaller imageis formed. 'n other words& the focal length& f is more than 2F. This arrangment of conerging
lens is commonly seen in film cameras. (f ) 2F#
2# $hen f is between 2F and F& (2F*f)F#& the image produced is real& inerted& and larger in
si+e than the ob%ect. This arrangement of conerging lens is commonly found in pro%ectors.
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F2F
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-# $hen an ob%ect is placed within the focal point F& (f*F# of a conerging lens& an upright&
enlarged and irual image is created. uch an image is formed when a magnifying glass is
used.
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