Mention the rules to draw ray diagram for image formation by lense?
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Mention the rules to draw ray diagram for image formation by lense?
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Answer:
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Ray Diagrams for Lenses
A ray from the top of the object proceeding parallel to the centerline perpendicular to the lens. Beyond the lens, it will pass through the principal focal point. ...
A ray through the center of the lens, which will be undeflected. ...
A ray through the principal focal point on the near side of the lens.
Explanation:
Using rule 1, draw a line from the top of the object, parallel to the principal axis, to the mid-plane of the lens, then draw the refracted ray line from the mid-plane of the lens through the focal point. Using rule 2, draw a line from the top of the object, straight through the optical centre of the lens.
Answer:
*Draw a minimum of two(must) rays starting from a single point(top of the object). #If the ray is passing through the optical centre no deviation takes place. #If the ray passes through the focus(convex) or is directed towards the focus(concave) then after refraction the ray goes parallel to the lens.