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An object is placed between the focus and the pole of a concave mirror, the image formed will be:
Real, inverted and enlarged
Real, inverted and diminished
Virtual, erect and diminished
Virtual, erect and enlarged
Virtual, erect and enlarged
When an object is placed between the focus (F) and the pole (P) of a concave mirror, the incident rays diverging from the object reflect off the mirror and diverge away from the principal axis. When produced backward behind the mirror, these reflected rays appear to meet, forming a virtual, erect, and magnified (enlarged) image.
When an object is placed between the focus (F) and the pole (P) of a concave mirror, the incident rays diverging from the object reflect off the mirror and diverge away from the principal axis. When produced backward behind the mirror, these reflected rays appear to meet, forming a virtual, erect, and magnified (enlarged) image.
This is precisely how a shaving or makeup mirror (concave mirror) works when you bring your face very close to it: you see a magnified and upright image of your face in the mirror.
Concave mirror special case: Inside Focus (F) gives Behind Mirror (V-E-M: Virtual, Erect, Magnified).
f1тАЛ=v1тАЛ+u1тАЛ тАФ Mirror Formula
m=тИТuvтАЛ=hoтАЛhiтАЛтАЛ тАФ Magnification Formula
In a concave mirror, as the object distance u decreases from infinity toward the pole, the image distance v increases and moves behind the mirror. Specifically, when the object is located within the focal length (u<f), the mirror formula f1тАЛ=v1тАЛ+u1тАЛ yields a positive value for v, indicating that a virtual image is formed behind the reflecting surface with a magnification m=тИТuvтАЛ>1, which means the image is upright and larger than the object.
A concave mirror can form both real and virtual images depending on the object position.
When the object is placed between the pole (P) and the principal focus (F), the image formed is virtual, erect, and enlarged.
This is the only position in a concave mirror where a virtual and erect image is produced.
For all other positions of the object in front of a concave mirror, the image formed is real and inverted.
Provides a magnified upright view which is useful for shaving and dental inspection mirrors.
The virtual image cannot be projected onto a screen.
Shaving mirrors
Dentist's head mirrors / dental inspection mirrors
Makeup mirrors
Option A is incorrect because the image is virtual, not real.
Option B is incorrect because real images formed by concave mirrors are inverted and formed in front of the mirror.
Option C is incorrect because the image is enlarged (magnified), not diminished.
D is correct тАФ When an object is placed between the focus and the pole of a concave mirror, the image formed is virtual, erect and enlarged.
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