The Xs on the principle axis represents the focal point of the lens. The distance from...

  

Transcribed Image Text:

The "X"s on the principle axis represents the focal point of the lens. The distance from lens to the focal point is called the focal length (f). The focal length is equal in either side of the lens. Measure the focal length using the ruler tool Focal length (f): Calculate 1/f: QQ Rays O Marginal Principal O Many None www 20 40 www.mb 60 80 100 120 140 160 180 200 220 240cm Radius of Curvature 80 cm Index of Refraction 1.50 Diameter 80 cm Focal Points (F) O Virtual Image Labels Second Point The "X"s on the principle axis represents the focal point of the lens. The distance from lens to the focal point is called the focal length (f). The focal length is equal in either side of the lens. Measure the focal length using the ruler tool Focal length (f): Calculate 1/f: QQ Rays O Marginal Principal O Many None www 20 40 www.mb 60 80 100 120 140 160 180 200 220 240cm Radius of Curvature 80 cm Index of Refraction 1.50 Diameter 80 cm Focal Points (F) O Virtual Image Labels Second Point