1) As you walk away from a plane mirror on a wall, your image A) is always a rea
ID: 1386549 • Letter: 1
Question
1) As you walk away from a plane mirror on a wall, your image A) is always a real image, no matter how far you are from the mirror. B) gets smaller. C) changes from being a virtual image to a real image as you pass the focal point. D) may or may not get smaller, depending on where the observer is positioned. E) is always the same size. 2) Suppose you place your face in front of a concave mirror. A) Your image will be diminished in size. B) If you position yourself between the center of curvature and the focal point of the mirror, you will not be able to see your image. C) No matter where you place yourself, a real image will be formed. D) Your image will always be inverted. E) None of these is true.Explanation / Answer
1)The magnification m of a spherical mirror is
m = - d_i / d_o = h_i / h_o
where "d" represents distances, "h" represents heights, "o" represents the object, and "i" represents the image
Note that for a plane mirror, the image and object distances are equal and opposite (d_i < 0 for a virtual image). Therefore, the magnification m = 1, and the image height is always the same as the object height
so answer is is always the same size.
Answer is E
2)a) is not always true. There are cases when the image will be increased in size and cases when it will be the same size as the object.
b) is not always true. If the object is located at the focus or in front of the focus, the image will not be real.
c) is not always true. In some cases the image will not be inverted.
d) is not true. You will be able to see the image.
so answer is E
None of the above
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