An object is placed at the following distance from a convex lens of focal length 15 cm:(a) 35 cm (b) 30 cm (c) 20 cm (d) 10 cmWhich position of the object will produce:(i) a magnified real image?(ii) a magnified virtual image?(iii) a diminished real image?(iv) an image of same size as the object?

Here, $f=15cm$ and $2f=30cm$.

(i) The position of the object that will produce a magnified real image is 20cm because a convex mirror forms a real, magnified image when the object is placed between $f$ and $2f$.

The image is posted for reference only.

(ii) The position of the object that will produce a magnified virtual image is 10cm because a convex mirror forms a virtual, magnified image when an object is placed between $f$ (focus) and $C$ optical centre.

The image is posted for reference only.

(iii) The position of the object that will produce a diminished real image is 35cm because a convex mirror forms a real, diminished image when an object is placed beyond $2f$.

The image is posted for reference only.

(iv) The position of the object that will produce an image of same size as the object is 30cm because a convex mirror forms a real image of the same size when an object is placed at $2f$.

The image is posted for reference only.

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Updated on: 10-Oct-2022

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