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If the screen is at the right position and the object is in a right position, the lens will focus the image of the object onto the screen.  If the screen is anywhere else, the object will look blurry or won't be seen.  The optical table has a meter-tape attached to the side, to give the position of the items. If the object is in a wrong position, the lens will defocus the light -- spread it out.  That means that the screen can't be placed anywhere to display a focused image.   If xL = 32.7 cm and the focal length is f = 20.8 cm, give a position (xO) that results in the light from the object spreading out.  (There are infinitely many such positions.)

If the screen is at the right position and the object is in a right position, the lens will focus the image of the object onto the screen.  If the screen is anywhere else, the object will look blurry or won't be seen.  The optical table has a meter-tape attached to the side, to give the position of the items. If the object is in a wrong position, the lens will defocus the light -- spread it out.  That means that the screen can't be placed anywhere to display a focused image.   If xL = 32.7 cm and the focal length is f = 20.8 cm, give a position (xO) that results in the light from the object spreading out.  (There are infinitely many such positions.)

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If the screen is at the right position and the object is in a right position, the lens will focus the image of the object onto the screen.  If the screen is anywhere else, the object will look blurry or won't be seen.  The optical table has a meter-tape attached to the side, to give the position of the items.

If the object is in a wrong position, the lens will defocus the light -- spread it out.  That means that the screen can't be placed anywhere to display a focused image.

 

If xL = 32.7 cm and the focal length is f = 20.8 cm, give a position (xO) that results in the light from the object spreading out.  (There are infinitely many such positions.)

 

Scręen Object Lens White Light Хо XL Xs
Transcribed Image Text:Scręen Object Lens White Light Хо XL Xs
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