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MY PRESENTATION ON HOME MADE PROJECTOR.. *IMAGE DISTANCE, OBJECT DISTANCE, FOCAL LENGTH ASHVINI CARVAJAL 4S1.
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LET US BEGIN!!!!!!!. A picture containing text, person, indoor, wall Description automatically generated.
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IMAGE DISTANCE(V). Person walking on the road. The image distance from the wall(image) to the lens was 45in/(114.3 cm(114))..
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OBJECT DISTANCE(U). Close up of ruler. The object distance from the lens to the phone was 22in/(55.88 cm(56))..
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FOCAL LENGTH(F). Light reflection in a lens. The focal length is found with the formula: 1/f = 1/u + 1/v = 1/u + 1/v= 1/f = 1/56 + 1/114= 1/f = 85/3192 = 1/f = f= 3192/85 = 37 47/85 =37.55924117..... =( if ROUNDED=38 38cm) FOCAL POINT IS 38cm or 37 47/85cm..
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THANK YOU FOR WATCHING!. A picture containing light Description automatically generated.