An object at a distance of $+ 15 cm$ is slowly moved towards the pole of a convex mirror. The image will get

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Shortened and real

Enlarged and real

Enlarged and virtual

Diminished and virtual

answer is C.

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Detailed Solution

An object at a distance of

+ 15 cm

is slowly moved towards the pole of a convex mirror. The image will get enlarged and virtual.
A convex mirror always forms a virtual and diminished image of an object because the focal point and the centre of curvature of the convex mirror are imaginary points that cannot be reached. But as we move toward the pole of the mirror, the image will get bigger and bigger. For example, if the object is placed at infinity, the image will be point-sized.
Question Image

But when the object is placed between infinity and the pole of the mirror, the image will be diminished but bigger than point-sized.
Question Image

Hence we can conclude that if we move the object towards the pole of a convex mirror, the image will get enlarged and virtual.
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