Question

3. Which three main rays are used to locate the image formed by a spherical lens ?
Explain by drawing diagram.
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Answer 1

Answer:

The "three principal rays" which are used for visualizing the image location and size are:

A ray from the top of the object proceeding parallel to the centerline perpendicular to the lens. ...

A ray through the center of the lens, which will be undeflected.

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Answer 2

Spherical lens :

Explanation:

• Spherical Lenses Ray Diagrams:
• A ray emanating from the object's top and running parallel to the lens's centerline.
• A ray that passes through the centre of the lens and is not deflected.
• On the near side of the lens, a ray passes through the main focal point.
• Show that the image of an item generated by a concave lens is virtual, erect, and decreased by drawing a ray diagram.
• Light rays extend out from a point on an object and bend at a lens, forming an image point where all of the rays cross. It's simple to trace three beams. The focal ray, the parallel ray, and the primary ray through the lens's centre.