Which of the following is not true about the image formed in a plane mirror? a. It is real and inverted b. It is formed behind the mirror c. It is the same size as the object d. It is upright and laterally inverted
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Answer:
-1.
When sighting at the middle image, light will reflect twice prior to reaching one's eye.
Answer: ABEG
A is true; like any plane mirror image, the image formed by two mirrors oriented at right angles is the same size as the object.
B is true; the middle image is the same distance from the crease of the dual mirror system as the image is from the crease. However, image distances are usually measured as the smallest distance measured perpendicularly to the mirror. For middle images, this distance would be measured to an extended mirror line and it would be the same distance as that from the object to that same mirror.
C is false; the middle image, unlike the primary images, does not exhibit this feature of left-right reversal.
D is false; the middle image is a virtual image; it is upright and located behind the mirror (like any virtual image).
E is true; just look at the middle image and you will see an upright image.
F is false; a magnification of -1 means that the image would be inverted (negative M) and the same size as the object (1); the middle image is the same size as the object but it is not inverted.
G is true; light will reflect twice - once off each mirror - prior to traveling to the viewer's eye.
Explanation:
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Answer:A is true; like any plane mirror image, the image formed by two mirrors oriented at right angles is the same size as the object.
B is true; the middle image is the same distance from the crease of the dual mirror system as the image is from the crease. However, image distances are usually measured as the smallest distance measured perpendicularly to the mirror. For middle images, this distance would be measured to an extended mirror line and it would be the same distance as that from the object to that same mirror.
C is false; the middle image, unlike the primary images, does not exhibit this feature of left-right reversal.
D is false; the middle image is a virtual image; it is upright and located behind the mirror (like any virtual image).
E is true; just look at the middle image and you will see an upright image.
F is false; a magnification of -1 means that the image would be inverted (negative M) and the same size as the object (1); the middle image is the same size as the object but it is not inverted.
Explanation: