Answer :

__Given__

The distance of object from lens = -10cm (since the object is on the left-hand side of lens and acc. To our sign convention)

Focal length of convex lens = + 40cm (focal length of convex length is positive)

The distance of image from Lens = ?

__Formula Used__

Lens Formula

Magnification formula

Using lens formula

V = = -13.33cm

Hence, the image is on the same side of object at the distance of 13.33 cm from lens and the image is __virtual__.

Using magnification formula

M = 1.33

The image is 1.33 times the object and is __erect__.

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