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Rules of Ray Diagram for Representation of Images Formed

Describe with...

Question

Describe with the help of a ray-diagram, the size, nature and position of the image formed by a convex lens, when an object is placed beyond 2F.

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Solution

The below figure shows the ray diagram for the case when object is placed beyond 2F.
Clearly, the image is diminished, real and inverted. It is formed in between F and 2F, on the other side of the lens.

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Q. An object is placed beyond twice the focal length of a convex lens. Find the position nature and size of the image with the help of a ray diagram.

Q. Describe with the help of a diagram, the nature, size and position of the image formed when an object is placed beyond the centre of curvature of a concave mirror.

Q. Draw a diagram to represent the nature, position and relative size of the image formed by a i) convex lens for the object placed at

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ii) concave lens for the object placed between

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Q. (a) For which position of an object, a real, diminished image is formed by a convex lens?
(b) Two convex lenses A and B have focal lengths of 2.5 cm and 12.0 cm, respectively. Which lens has a greater power?
(c) Describe with the help of a labelled ray-diagram, the formation of image when an object is placed in the front of a convex lens between focus and optical centre. State any two characteristics of the image formed.

Q. Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
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(b) between F₁ and the optical center O of the lens

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