DiagramModerate3 marks
An object is placed at 2F position of a convex lens. Draw a ray diagram showing the formation of the image.
Topic: Ray diagram for object at 2F
Question wording verified against source paper
Answer
Solution diagram
Exam answer
A real, inverted image of the same size is formed at 2F₂.
Explanation
Draw one ray parallel to the principal axis refracting through F₂ and another through the optical centre undeviated.
More from Refraction through a Lens
The distance (V) of a virtual image formed by a lens of focal length 15 cm never exceeds a certain finite value, then this value will be:
(a) less than 15 cm
(b) between 15 cm to 30 cm
(c) less than or equal to 30 cm
(d) less than or equal to 15 cm2026Identify the type of lens used.2026What would be the magnification (more than 1 / less than 1 / equal to 1) if the object is placed between F and 2F of the above lens?2026An object placed in front of a convex lens, forms an image of same size on a screen. Moving the object 12 cm closer to the lens results in the formation of a real image which is three times the size of the object. Calculate the focal length of the lens.2026For a real image formed by a convex lens, the ratio of I : O = 2 : 5, then the object is:
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