An erect magnified and virtual image is formed, when an object is placed between the optical centre and principal focus of a lens.
i) Name the lens.
ii) Draw a ray diagram to show the formation of the image with the above stated characteristics.i) Convex lens
ii) The formation of the image in a convex lens is as shown below:
i) Where should an object be placed so that a real and inverted image of the same size as the object is obtained using a convex lens?
ii) Draw a ray diagram to show the formation of the image as specified in the part a (i).
i) When object is placed at 2F1 (centre of curvature) distance from the optical centre on the principal axis of a convex lens a real and inverted image of the same size of object is formed.
ii) 
Ranbir claims to have obtained an image twice the size of the object with a concave lens. Is he correct? Give a reason for your answer.
No, Ranbir is not correct.
Using, concave lens only small size upright images are obtained.
An image twice the size of the object with a concave lens cannot be obtained.
An object is placed in front a lens between its optical centre and the focus and forms a virtual, erect and diminished image?
i) Name the lens which formed this image.
ii) Draw a ray diagram to show the formation of the image with the above stated characteristics.i) Concave lens
ii) The formation of image by the concave lens is as illustrated below:
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