Physics
General
Easy
Question
An object is placed at a distance of 
the from a convex lens the image will be ...
- at one of foci, virtual and double its size
- at 2f, virtual and erect
The correct answer is: at one of foci, virtual and double its size
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A convex kens of focal length f is placed somewhere in between an object and a screen. The distance between the object and the screen is x. If the numerical value of the magnification product by the lens is m , What is the focal length of the lens?
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