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Activity 9.6 — Image Formation by Convex Lens
NCERT Activity 9.6: Explore how a convex lens forms images at different object positions — beyond 2F, at 2F, between F and 2F, and at F.
How To Perform
1
Set Up the Lens
Identify the Optical Centre (O), Focus (F), and 2F points of a convex lens.
2
Object Beyond 2F
Place the object beyond 2F₁ and draw ray diagrams to find the image.
3
Object at 2F
Move the object to 2F₁ and observe a real, inverted, same-size image at 2F₂.
4
Object Between F and 2F
Place the object between F₁ and 2F₁ to get a magnified real image.
5
Object at F
Place the object at F₁ and see refracted rays become parallel — image at infinity.
6
Classify
Identify where to place an object for a real, inverted, magnified image.