Ray 1. Incident ray parallel to the principal axis

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Presentation transcript:

Ray 1. Incident ray parallel to the principal axis “Ray Tracing – Convex lens” F Object Principal axis 1 2 3 Image Ray 1. Incident ray parallel to the principal axis - emerges through the focal point Ray 2. Incident ray through the focal point - emerges parallel to the principal axis Ray 3. Incident ray through the pole of the lens - emerges unaffected NB: Image is formed at the intersection point of the emerging rays (Image is inverted, enlarged & real)

“Ray Tracing – Convex lens” Object placed at beyond double the focal length (>2f) Object F F Principal axis Image

“Ray Tracing – Convex lens” Object placed at double the focal length (2f) Object F F Principal axis Image

“Ray Tracing – Convex lens” Object placed between the focal length (f) and double the focal length (2f) Object F F Principal axis Image

“Ray Tracing – Convex lens” Object placed at the focal length (f) Principal axis F

“Ray Tracing – Convex lens” Object placed between the focal length (f) and pole of mirror Image Object F Principal axis F

“Ray Tracing – Convex lens” Summary Table Object position Image description Type Orientation Size Magnification >2f Real Inverted Diminished  1/2 2f Same 1 Between 2f & f Enlarged 2 f No image formed Between f & pole Virtual Upright