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Question
State the nature and position of the object on the principal axis to obtain a real and magnified image.
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Solution
Lens is convex; the position of the object is between F and 2F.
RELATED QUESTIONS
In figure, (a) and (b), F1 and F2 are the two foci of thin lenses and AB is the incident ray. Complete the diagram to show the path of the ray AB after refraction through each lens.
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| (a) |
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| (b) |
In the diagram below, XX’ represents the principal axis, O the optical centre and F the focus of the lens. Complete the path of rays A and B as they emerge out of the lens.
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| (a) | (b) |
Study the diagram shown in Fig. 5.56
Where is the image formed?
A ray of light incident parallel to the principal axis of a lens, passes undeviated after refraction.
A ray of light incident at the optical centre of lens, passes undeviated after refraction.
In the following diagram , the object and the image formed by the respective lenses are shown. Complete the ray diagram, and locate the focus. Find the focal length of the lens.
Define the term focus of a lens.
Complete the following diagram and state what happens to the ray of light after refraction through the lens.
Complete the following diagram and state what happens to the ray of light after refraction through the lens.
